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Chevrolet Check Engine Light | Top 5 Causes for Each Model

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If possible, try to scan your vehicle. You can read your check engine light with or without a scanner and get an exact diagnosis rather than rely only on your powers of deduction. 

But, if you are on the side of the road and in a rush, this list of common causes for each Hyundai model should help you narrow down the most likely cause of your issue.

Take a look through the tables below for the most common causes for your Hyundai models’ Check Engine Light. If none of the causes below match the symptoms you’re experiencing or if you want a more in depth explanation of the common causes, go ahead and check out “The 13 Most Common Causes For A Check Engine Light | How To Diagnose Them”.

Let’s dive in.

Chevrolet Astro CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#2

P0101

Engine air filter is very dirty

Replace the engine air filter

Air filter $50-70

Mass airflow sensor is dirty or broken

Replace the mass airflow sensor

Mass air flow sensor $220-320

Catalytic converter is damaged or worn

Replace the catalytic converter

Catalytic converter $1720-1780

#3

P0420

Damaged or worn out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#4

P0128

Faulty engine coolant thermostat

Replace engine coolant thermostat

Replace engine coolant thermostat: $40 – $190

#5

P0121

Faulty mass airflow sensor

Replace mass airflow sensor

Mass airflow sensor: $230 – $330

Faulty air filter

Replace air filter

Air filter: $50 – $70

Chevrolet Avalanche CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

For more details visit our Chevrolet Avalanche Check Engine Light article.

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0455

Missing, loose, or damaged gas cap

Tighten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#2

P0521

Low oil level

Add oil to your engine

Top off oil: $5 to $10

Dirty oil

Change oil and oil filter

Oil and filter change: $136 to $149

Leaking oil pan

Replace oil pan

Oil pan replacement: $654 to $740

Broken oil pressure sensor

Replace oil pressure sensor

Oil pressure sensor: $123 to $140

#3

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#4

P0449

Missing, loose, or damaged gas cap

Tighten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#5

P0121

Faulty throttle body actuator

Replace throttle body actuator

Throttle body actuator $570-$700

Faulty throttle body position sensor

Replace throttle body position sensor

Throttle position sensor $170-$230

Faulty accelerator pedal position sensor

Replace accelerator pedal position sensor

Accelerator pedal position sensor $130-$200

Damaged wiring

Repair/replace wiring

Wiring repair/replacement $100-$1000

Chevrolet Avalanche 1500 CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0332

Faulty knock sensor

Replace knock sensor

Knock sensor: $297 – $381

Faulty knock sensor harness

Replace knock sensor harness

Knock sensor harness: $14 – $66

Faulty temperature sensor

Tighten or replace gas cap

Temperature sensor: $392 – $427

#2

P0449

Missing, loose, or damaged gas cap

Tighten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#3

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#4

P0174

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak: $100 – $200

Clogged fuel injectors

Clean fuel injectors

Clean fuel injectors: $50 – $80

#5

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

Chevrolet AVEO CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0420

Damaged or worn out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#2

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#3

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#4

P2135

Faulty throttle body actuator

Replace throttle body actuator

Throttle body actuator $570-$700

Faulty throttle body position sensor

Replace throttle body position sensor

Throttle position sensor $170-$230

Faulty accelerator pedal position sensor

Replace accelerator pedal position sensor

Accelerator pedal position sensor $130-$200

Damaged wiring

Repair/replace wiring

Wiring repair/replacement $100-$1000

#5

P0340

Faulty camshaft position sensor

Replace camshaft position sensor

Camshaft position sensor $120-$300

Faulty crankshaft position sensor

Replace crankshaft position sensor

Crankshaft position sensor $190-$250

Faulty ECM

Replace ECM

ECM $1000-$1200

Faulty timing chain or belt replacement

Replace timing chain or belt replacement

Timing chain or belt replacement $200-$1000

Chevrolet Blazer CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#2

P0420

Damaged or worn out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair

#3

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#4

P0174

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak: $100 – $200

Clogged fuel injectors

Clean fuel injectors

Clean fuel injectors: $50 – $80

#5

P0440

Damaged charcoal cannister

Replace charcoal cannister

Replace charcoal cannister: $753 – $1000

Loose or missing gas cap

Replace or tighten gas cap

Replace or tighten gas cap: $0 – $20

Faulty purge valve

Replace purge valve

Replace purge valve: $109 – $172

Chevrolet C1500 CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#2

P0304

Spark plug #4 is worn or broken

Replace spark plug #4 

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#3

P1345

On newer vehicles: Camshaft or crankshaft position sensor

Replace camshaft or crankshaft position sensor

Camshaft position sensor: $200 – $400

On older vehicles: Stretched timing chain

Replace stretched timing chain

Crankshaft position sensor: $175 – $230

  

Timing chain: $1,624 to $1,879

#4

P0174

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak: $100 – $200

Clogged fuel injectors

Clean fuel injectors

Clean fuel injectors: $50 – $80

#5

P0102

Faulty mass airflow sensor

Replace mass airflow sensor

Mass airflow sensor: $230 – $330

Faulty air filter

Replace air filter

Air filter: $50 – $70

Chevrolet C1500 Suburban CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#2

P0430

Damaged or worn out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#3

P0140

Faulty oxygen sensor

Replace oxygen sensor

Oxygen sensor: $200 – $300

Faulty mass airflow sensor

Replace mass airflow sensor

Mass airflow sensor: $230 – $330

Chevrolet C2500 CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0102

Faulty mass airflow sensor

Replace mass airflow sensor

Mass airflow sensor: $230 – $330

Faulty air filter

Replace air filter

Air filter: $50 – $70

#2

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#3

P0174

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak: $100 – $200

Clogged fuel injectors

Clean fuel injectors

Clean fuel injectors: $50 – $80

#4

P1345

On newer vehicles: Camshaft or crankshaft position sensor

Replace camshaft or crankshaft position sensor

Camshaft position sensor: $200 – $400

On older vehicles: Stretched timing chain

Replace stretched timing chain

Crankshaft position sensor: $175 – $230

  

Timing chain: $1,624 to $1,879

Chevrolet C3500 CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P1345

On newer vehicles: Camshaft or crankshaft position sensor

Replace camshaft or crankshaft position sensor

Camshaft position sensor: $200 – $400

On older vehicles: Stretched timing chain

Replace stretched timing chain

Crankshaft position sensor: $175 – $230

  

Timing chain: $1,624 to $1,879

#2

P0102

Faulty mass airflow sensor

Replace mass airflow sensor

Mass airflow sensor: $230 – $330

Faulty air filter

Replace air filter

Air filter: $50 – $70

Chevrolet Camaro CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

For more details visit our Chevrolet Camaro Check Engine Light article.

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0420

Damaged or worn out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#2

P0430

Damaged or worn out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#3

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#4

P0449

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#5

P0174

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak: $100 – $200

Clogged fuel injectors

Clean fuel injectors

Clean fuel injectors: $50 – $80

Chevrolet Caprice CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0441

Damaged charcoal cannister

Replace charcoal cannister

Replace charcoal cannister: $753 – $1000

Loose or missing gas cap

Replace or tighten gas cap

Replace or tighten gas cap: $0 – $20

Faulty purge valve

Replace purge valve

Replace purge valve: $109 – $172

#2

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#3

P0400

Stuck EGR valve

Replace the EGR valve

EGR valve: $250 – $350

Faulty EGR temperature sensor

Replace the EGR temperature sensor

EGR temperatute sensor: $220 – $230

#4

P0305

Spark plug #5 is worn or broken

Replace spark plug #5 

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#5

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

Chevrolet Captiva Sport CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0013

Faulty camshaft sensor

Replace camshaft sensor

Camshaft sensor: $200 – $400

Faulty oil control valve

Replace oil control valve

Oil control valve: $300 – $600

#2

P0011

Engine oil is low or dirty

Get an oil change

Oil Change $20-$60

Camshaft variable timing solenoid failure

Replace oil control valve/variable valve timing control solenoid

Oil Control Valve/Variable Valve Timing Control Solenoid $300-$400

Engine failure

Replace engine

Engine $3000-$4000

#3

P0014

Engine oil is low or dirty

Get an oil change

Oil Change $20-$60

Camshaft variable timing solenoid failure

Replace oil control valve/variable valve timing control solenoid

Oil Control Valve/Variable Valve Timing Control Solenoid $300-$400

Engine failure

Replace engine

Engine $3000-$4000

#4

P0420

Damaged or worn out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#5

P0010

Faulty replace VVT Control Solenoid

Replace VVT Control Solenoid

VVT Control Solenoid $500-$600

Faulty camshaft position sensor

Replace camshaft position sensor

Camshaft position sensor $120-$300

Faulty crankshaft position sensor

Replace crankshaft position sensor

Crankshaft position sensor $190-$250

Faulty timing chain or belt

Replace timing chain or belt

Timing chain or belt replacement $200-$1000

Chevrolet Cavalier CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0440

Damaged charcoal cannister

Replace charcoal cannister

Replace charcoal cannister: $753 – $1000

Loose or missing gas cap

Replace or tighten gas cap

Replace or tighten gas cap: $0 – $20

Faulty purge valve

Replace purge valve

Replace purge valve: $109 – $172

#2

P0442

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#3

P0455

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#4

P0420

Damaged or worn out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#5

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

Chevrolet Classic CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0455

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#2

P0420

Damaged or worn out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#3

P0442

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#4

P0128

Faulty engine coolant thermostat

Replace engine coolant thermostat

Replace engine coolant thermostat: $40 – $190

Chevrolet Cobalt CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

For more details visit our Chevrolet Cobalt Check Engine Light article.

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#2

P0128

Faulty engine coolant thermostat

Replace engine coolant thermostat

Replace engine coolant thermostat: $40 – $190

#3

P0455

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#4

P0442

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#5

P0135

Faulty upstream oxygen sesnor

Replace oxygen sensor

Oxygen Sensor $200-$300

Blown fuse

Replace fuse

Fuse $5

Damaged or shorted wiring or connections

Replace or repair wiring

Wiring repair/replacement $100-$1000

Chevrolet Colorado CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

For more details visit our Chevrolet Colorado Check Engine Light article.

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0128

Faulty engine coolant thermostat

Replace engine coolant thermostat

Replace engine coolant thermostat: $40 – $190

#2

P0455

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#3

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#4

P0017

Low oil/dirty oil

Get an oil change or add oil

Engine oil and filter change $20-$60

Timing chain is stretched

Replace timing chain

Timing chain: $1,624 to $1,879

Slipped reluctor ring on the crankshaft

Replace reluctor ring

Reluctor ring $200-$600

#5

P0449

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

Chevrolet Corvette CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#2

P0174

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak: $100 – $200

Clogged fuel injectors

Clean fuel injectors

Clean fuel injectors: $50 – $80

#3

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#4

P0410

Blown air injector fuse

Replace air injector fuse

Fuse: $10

Faulty air pump

Replace air pump

Air Pump: $570-$710

Faulty air pump relay

Replace air pump relay

Air Pump Relay: $50-$75

#5

P2068

Faulty fuel level sensor

Replace fuel level sensor

Fuel level sensor: $940 – $1080

Chevrolet Cruze CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

For more details visit our Chevrolet Cruze Check Engine Light article.

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P1101

Faulty mass airflow sensor

Replace the mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor harness

Replace the mass airflow sensor harness

Replace mass airflow sensor: $230 – $330

Dirty air filter

Replace air filter

Replace air filter: $20 – $80

#2

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#3

P0299

Faulty turbo or supercharger

Replace turbo or supercharger

Turbo or supercharger: $300 – $3400

Faulty boost pressure sensor

Replace boost pressure sensor

Boost pressure sensor: $200 – $220

#4

P0420

Damaged or worn out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#5

P0496

Faulty EVAP Purge Volume Control Valve

Replace EVAP purge volume control valve

EVAP Purge Volume Control Valve $150-$200

Leaking EVAP system hose

Replace EVAP line 

EVAP Line $20-$100

Faulty EVAP pressure sensor

EVAP pressure sensor

EVAP Pressure Sensor $280-$330

Chevrolet Cruze Limited CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#2

P1101

Faulty mass airflow sensor

Replace the mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor harness

Replace the mass airflow sensor harness

Replace mass airflow sensor: $230 – $330

Dirty air filter

Replace air filter

Replace air filter: $20 – $80

#3

P0496

Faulty EVAP Purge Volume Control Valve

Replace EVAP purge volume control valve

EVAP Purge Volume Control Valve $150-$200

Leaking EVAP system hose

Replace EVAP line 

EVAP Line $20-$100

Faulty EVAP pressure sensor

EVAP pressure sensor

EVAP Pressure Sensor $280-$330

   

#4

P0420

Damaged or worn-out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#5

P0299

Faulty turbo or supercharger

Replace turbo or supercharger

Turbo or supercharger: $300 – $3400

Faulty boost pressure sensor

Replace boost pressure sensor

Boost pressure sensor: $200 – $220

Chevrolet Equinox CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

For more details visit our Chevrolet Equinox Check Engine Light article.

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0420

Damaged or worn-out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#2

P0014

Engine oil is low or dirty

Get an oil change

Oil Change $20-$60

Camshaft variable timing solenoid failure

Replace oil control valve/variable valve timing control solenoid

Oil Control Valve/Variable Valve Timing Control Solenoid $300-$400

Engine failure

Replace engine

Engine $3000-$4000

#3

P0013

Faulty camshaft sensor

Replace camshaft sensor

Camshaft sensor: $200 – $400

Faulty oil control valve

Replace oil control valve

Oil control valve: $300 – $600

#4

P0455

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#5

P0011

Engine oil is low or dirty

Get an oil change

Oil Change $20-$60

Camshaft variable timing solenoid failure

Replace oil control valve/variable valve timing control solenoid

Oil Control Valve/Variable Valve Timing Control Solenoid $300-$400

Engine failure

Replace engine

Engine $3000-$4000

Chevrolet Express 1500 CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#2

P0174

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak: $100 – $200

Clogged fuel injectors

Clean fuel injectors

Clean fuel injectors: $50 – $80

#3

P0128

Faulty engine coolant thermostat

Replace engine coolant thermostat

Replace engine coolant thermostat: $40 – $190

#4

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#5

P0420

Damaged or worn-out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

Chevrolet Express 2500 CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#2

P0455

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#3

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#4

P0174

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak: $100 – $200

Clogged fuel injectors

Clean fuel injectors

Clean fuel injectors: $50 – $80

#5

P0442

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

Chevrolet Express 3500 CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#2

P0174

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak: $100 – $200

Clogged fuel injectors

Clean fuel injectors

Clean fuel injectors: $50 – $80

#3

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#4

P0455

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

Chevrolet HHR CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0128

Faulty engine coolant thermostat

Replace engine coolant thermostat

Replace engine coolant thermostat: $40 – $190

#2

P0455

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#3

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#4

P0010

Faulty replace VVT Control Solenoid

Replace VVT Control Solenoid

VVT Control Solenoid $500-$600

Faulty camshaft position sensor

Replace camshaft position sensor

Camshaft position sensor $120-$300

Faulty crankshaft position sensor

Replace crankshaft position sensor

Crankshaft position sensor $190-$250

Faulty timing chain or belt

Replace timing chain or belt

Timing chain or belt replacement $200-$1000

#5

P0013

Faulty camshaft sensor

Replace camshaft sensor

Camshaft sensor: $200 – $400

Faulty oil control valve

Replace oil control valve

Oil control valve: $300 – $600

Chevrolet Impala CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0455

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#2

P0128

Faulty engine coolant thermostat

Replace engine coolant thermostat

Replace engine coolant thermostat: $40 – $190

#3

P0420

Damaged or worn-out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#4

P0449

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#5

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

Chevrolet Impala Limited CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

For more details visit our Chevrolet Impala Check Engine Light article.

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0455

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#2

P0496

Faulty EVAP Purge Volume Control Valve

Replace EVAP purge volume control valve

EVAP Purge Volume Control Valve $150-$200

Leaking EVAP system hose

Replace EVAP line 

EVAP Line $20-$100

Faulty EVAP pressure sensor

EVAP pressure sensor

EVAP Pressure Sensor $280-$330

#3

P0442

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#4

P0443

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#5

P0011

Engine oil is low or dirty

Get an oil change

Oil Change $20-$60

Camshaft variable timing solenoid failure

Replace oil control valve/variable valve timing control solenoid

Oil Control Valve/Variable Valve Timing Control Solenoid $300-$400

Engine failure

Replace engine

Engine $3000-$4000

Chevrolet K1500 CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P1345

On newer vehicles: Camshaft or crankshaft position sensor

Replace camshaft or crankshaft position sensor

Camshaft position sensor: $200 – $400

On older vehicles: Stretched timing chain

Replace stretched timing chain

Crankshaft position sensor: $175 – $230

  

Timing chain: $1,624 to $1,879

#2

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#3

P0430

Damaged or worn out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#4

P0420

Damaged or worn-out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

Chevrolet K1500 Suburban CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0430

Damaged or worn out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#2

P1345

On newer vehicles: Camshaft or crankshaft position sensor

Replace camshaft or crankshaft position sensor

Camshaft position sensor: $200 – $400

On older vehicles: Stretched timing chain

Replace stretched timing chain

Crankshaft position sensor: $175 – $230

  

Timing chain: $1,624 to $1,879

Chevrolet K3500 CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0134

Faulty upstream oxygen sensor

Replace oxygen sensor

Oxygen Sensor $200-$300

Damaged or shorted wiring or connections

Replace or repair wiring

Wiring repair/replacement $100-$1000

#2

P0102

Faulty mass airflow sensor

Replace mass airflow sensor

Mass airflow sensor: $230 – $330

Faulty air filter

Replace air filter

Air filter: $50 – $70

Chevrolet Lumina CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0440

Damaged charcoal cannister

Replace charcoal cannister

Replace charcoal cannister: $753 – $1000

Loose or missing gas cap

Replace or tighten gas cap

Replace or tighten gas cap: $0 – $20

Faulty purge valve

Replace purge valve

Replace purge valve: $109 – $172

#2

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#3

P0401

Faulty EGR valve

Replace EGR valve

EGR valve: $332 to $413

Engine vacuum leak

Fix vacuum leak

Vacuum leak: $90 to $125

#4

P0446

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

Chevrolet Malibu CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

For more details visit our Chevrolet Malibu Check Engine Light article.

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0128

Faulty engine coolant thermostat

Replace engine coolant thermostat

Replace engine coolant thermostat: $40 – $190

#2

P0013

Faulty camshaft sensor

Replace camshaft sensor

Camshaft sensor: $200 – $400

Faulty oil control valve

Replace oil control valve

Oil control valve: $300 – $600

#3

P0010

Faulty replace VVT Control Solenoid

Replace VVT Control Solenoid

VVT Control Solenoid $500-$600

Faulty camshaft position sensor

Replace camshaft position sensor

Camshaft position sensor $120-$300

Faulty crankshaft position sensor

Replace crankshaft position sensor

Crankshaft position sensor $190-$250

Faulty timing chain or belt

Replace timing chain or belt

Timing chain or belt replacement $200-$1000

#4

P0420

Damaged or worn-out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#5

P1101

Faulty mass airflow sensor

Replace the mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor harness

Replace the mass airflow sensor harness

Replace mass airflow sensor: $230 – $330

Dirty air filter

Replace air filter

Replace air filter: $20 – $80

Chevrolet Malibu Limited CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0741

Faulty Torque Converter Lockup Solenoid

Replace Torque Converter Lockup Solenoid

Torque Converter Lockup Solenoid: $110 – $300

Faulty Engine Coolant Temperature Sensor

Replace Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor: $392 – $427

Faulty Torque Converter Clutch

Faulty Torque Converter Clutch

Torque Converter Clutch: $600 – $1200

#2

P0420

Damaged or worn-out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

Chevrolet Monte Carlo CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0420

Damaged or worn-out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#2

P0455

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#3

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

   

#4

P0128

Faulty engine coolant thermostat

Replace engine coolant thermostat

Replace engine coolant thermostat: $40 – $190

#5

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

Chevrolet Prizm CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0420

Damaged or worn-out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#2

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#3

P0446

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#4

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#5

P0440

Damaged charcoal cannister

Replace charcoal cannister

Replace charcoal cannister: $753 – $1000

Loose or missing gas cap

Replace or tighten gas cap

Replace or tighten gas cap: $0 – $20

Faulty purge valve

Replace purge valve

Replace purge valve: $109 – $172

Chevrolet S10 CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#2

P0440

Damaged charcoal cannister

Replace charcoal cannister

Replace charcoal cannister: $753 – $1000

Loose or missing gas cap

Replace or tighten gas cap

Replace or tighten gas cap: $0 – $20

Faulty purge valve

Replace purge valve

Replace purge valve: $109 – $172

#3

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#4

P0420

Damaged or worn-out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#5

P0410

Blown air injector fuse

Replace air injector fuse

Fuse: $10

Faulty air pump

Replace air pump

Air Pump: $570-$710

Faulty air pump relay

Replace air pump relay

Air Pump Relay: $50-$75

Chevrolet Silverado 1500 CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

For more details visit our Chevrolet Silverado 1500 Check Engine Light article.

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0449

Missing, loose, or damaged gas cap

Tighten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#2

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#3

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#4

P0332

Faulty knock sensor

Replace knock sensor

Knock sensor: $297 – $381

Faulty knock sensor harness

Replace knock sensor harness

Knock sensor harness: $14 – $66

Faulty temperature sensor

Replace temperature sensor

Temperature sensor: $392 – $427

#5

P0455

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

Chevrolet Silverado 1500 Classic CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0449

Missing, loose, or damaged gas cap

Tighten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#2

P0332

Faulty knock sensor

Replace knock sensor

Knock sensor: $297 – $381

Faulty knock sensor harness

Replace knock sensor harness

Knock sensor harness: $14 – $66

Faulty temperature sensor

Replace temperature sensor

Temperature sensor: $392 – $427

#3

P0455

Missing, loose, or damaged gas cap

Tighten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#4

P0442

Missing, loose, or damaged gas cap

Tighten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

Chevrolet Silverado 1500 HD CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#2

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#3

P0101

Engine air filter is very dirty

Replace the engine air filter

Air filter $50-70

Mass airflow sensor is dirty or broken

Replace the mass airflow sensor

Mass air flow sensor $220-320

Catalytic converter is damaged or worn

Replace the catalytic converter

Catalytic converter $1720-1780

#4

P0332

Faulty knock sensor

Replace knock sensor

Knock sensor: $297 – $381

Faulty knock sensor harness

Replace knock sensor harness

Knock sensor harness: $14 – $66

Faulty temperature sensor

Replace temperature sensor

Temperature sensor: $392 – $427

Chevrolet Silverado 2500 CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#2

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#3

P0174

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak: $100 – $200

Clogged fuel injectors

Clean fuel injectors

Clean fuel injectors: $50 – $80

#4

P0332

Faulty knock sensor

Replace knock sensor

Knock sensor: $297 – $381

Faulty knock sensor harness

Replace knock sensor harness

Knock sensor harness: $14 – $66

Faulty temperature sensor

Replace temperature sensor

Temperature sensor: $392 – $427

Chevrolet Silverado 2500 HD CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0101

Engine air filter is very dirty

Replace the engine air filter

Air filter $50-70

Mass airflow sensor is dirty or broken

Replace the mass airflow sensor

Mass air flow sensor $220-320

Catalytic converter is damaged or worn

Replace the catalytic converter

Catalytic converter $1720-1780

#2

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#3

P0128

Faulty engine coolant thermostat

Replace engine coolant thermostat

Replace engine coolant thermostat: $40 – $190

#4

P0332

Faulty knock sensor

Replace knock sensor

Knock sensor: $297 – $381

Faulty knock sensor harness

Replace knock sensor harness

Knock sensor harness: $14 – $66

Faulty temperature sensor

Replace temperature sensor

Temperature sensor: $392 – $427

#5

P0700

Defective shift solenoids

Replace shift solenoids

Shift solenoid: $200 – $500

Defective Valve Body

Replace valve Body

Valve Body: $300 – $1000

Faulty Transmission

Replace Transmission

Transmission: $1800 – $3400

Chevrolet Silverado 2500 HD Classic CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0420

Damaged or worn-out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#2

P0430

Damaged or worn out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#3

P0128

Faulty engine coolant thermostat

Replace engine coolant thermostat

Replace engine coolant thermostat: $40 – $190

#4

P0674

Glow plug failure

Replace glow plug

Glow plug: $230 – $290

Chevrolet Silverado 3500 CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0050

Faulty upstream oxygen sensor

Replace upstream oxygen sensor

Oxygen sensor: $275 – $500 

#2

P0700

Defective shift solenoids

Replace shift solenoids

Shift solenoid: $200 – $500

Defective Valve Body

Replace valve Body

Valve Body: $300 – $1000

Faulty Transmission

Replace Transmission

Transmission: $1800 – $3400

#3

P0101

Engine air filter is very dirty

Replace the engine air filter

Air filter $50-70

Mass airflow sensor is dirty or broken

Replace the mass airflow sensor

Mass air flow sensor $220-320

Catalytic converter is damaged or worn

Replace the catalytic converter

Catalytic converter $1720-1780

Chevrolet Silverado 3500 Classic CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0128

Faulty engine coolant thermostat

Replace engine coolant thermostat

Replace engine coolant thermostat: $40 – $190

#2

P0678

Glow plug failure

Replace glow plug

Glow plug: $230 – $290

Chevrolet Silverado 3500 HD CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0420

Damaged or worn-out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#2

P0674

Glow plug failure

Replace glow plug

Glow plug: $230 – $290

Chevrolet Sonic CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

For more details visit our Chevrolet Sonic Check Engine Light article.

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#2

P0420

Damaged or worn-out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#3

P0496

Faulty EVAP Purge Volume Control Valve

Replace EVAP purge volume control valve

EVAP Purge Volume Control Valve $150-$200

Leaking EVAP system hose

Replace EVAP line 

EVAP Line $20-$100

Faulty EVAP pressure sensor

EVAP pressure sensor

EVAP Pressure Sensor $280-$330

#4

P0128

Faulty engine coolant thermostat

Replace engine coolant thermostat

Replace engine coolant thermostat: $40 – $190

#5

P0597

Faulty thermostat

Replace the thermostat

Thermostat: $140 – $300

Chevrolet Spark CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0597

Faulty thermostat

Replace the thermostat

Thermostat: $140 – $300

#2

P0700

Defective shift solenoids

Replace shift solenoids

Shift solenoid: $200 – $500

Defective Valve Body

Replace valve Body

Valve Body: $300 – $1000

Faulty Transmission

Replace Transmission

Transmission: $1800 – $3400

#3

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#4

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

Chevrolet SSR CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0443

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#2

P0174

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak: $100 – $200

Clogged fuel injectors

Clean fuel injectors

Clean fuel injectors: $50 – $80

#3

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

 

Chevrolet Suburban CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0430

Damaged or worn out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#2

P0420

Damaged or worn-out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#3

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Spark plug wires: $180-$240

#4

P0455

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

Chevrolet Suburban 1500  CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

For more details visit our Chevrolet Suburban Check Engine Light article.

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#2

P0455

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#3

P0449

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#4

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#5

P0420

Damaged or worn-out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

Chevrolet Suburban 2500 CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P2135

Faulty throttle body actuator

Replace throttle body actuator

Throttle body actuator $570-$700

Faulty throttle body position sensor

Replace throttle body position sensor

Throttle position sensor $170-$230

Faulty accelerator pedal position sensor

Replace accelerator pedal position sensor

Accelerator pedal position sensor $130-$200

Damaged wiring

Repair/replace wiring

Wiring repair/replacement $100-$1000

#2

P0449

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#3

P0332

Faulty knock sensor

Replace knock sensor

Knock sensor: $297 – $381

Faulty knock sensor harness

Replace knock sensor harness

Knock sensor harness: $14 – $66

Faulty temperature sensor

Replace temperature sensor

Temperature sensor: $392 – $427

#4

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

Chevrolet Tahoe CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

For more details visit our Chevrolet Tahoe Check Engine Light article.

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Spark plug wires: $180-$240

#2

P0449

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#3

P0455

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#4

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#5

P0174

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak: $100 – $200

Clogged fuel injectors

Clean fuel injectors

Clean fuel injectors: $50 – $80

Chevrolet Tracker CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0400

Stuck EGR valve

Replace the EGR valve

EGR valve: $250 – $350

Faulty EGR temperature sensor

Replace the EGR temperature sensor

EGR temperatute sensor: $220 – $230

#2

P0442

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#3

P0420

Damaged or worn-out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#4

P0455

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

Chevrolet Trailblazer CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

For more details visit our Chevrolet Trailblazer Check Engine Light article.

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0128

Faulty engine coolant thermostat

Replace engine coolant thermostat

Replace engine coolant thermostat: $40 – $190

#2

P0014

Engine oil is low or dirty

Get an oil change

Oil Change $20-$60

Camshaft variable timing solenoid failure

Replace oil control valve/variable valve timing control solenoid

Oil Control Valve/Variable Valve Timing Control Solenoid $300-$400

Engine failure

Replace engine

Engine $3000-$4000

#3

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#4

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#5

P0455

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

Chevrolet Trailblazer EXT CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0014

Engine oil is low or dirty

Get an oil change

Oil Change $20-$60

Camshaft variable timing solenoid failure

Replace oil control valve/variable valve timing control solenoid

Oil Control Valve/Variable Valve Timing Control Solenoid $300-$400

Engine failure

Replace engine

Engine $3000-$4000

#2

P0128

Faulty engine coolant thermostat

Replace engine coolant thermostat

Replace engine coolant thermostat: $40 – $190

#3

P0455

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#4

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

#5

P0526

Engine cooling fan control module failure

Replace engine cooling fan control module failure

Engine cooling fan control module: $800 – $900

Engine cooling fan failure

Replace engine cooling fan failure

Engine cooling fan: $100 – $400

Engine cooling fan relay failure

Replace cooling fan relay failure

Cooling fan relay: $70 – $80

Chevrolet Traverse CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

For more details visit our Chevrolet Traverse Check Engine Light article.

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0008

Faulty timing chain

Replace timing chain

Timing chain $600-$1200

Faulty reluctor ring

Replace reluctor ring

Reluctor ring $200-$600

#2

P0420

Damaged or worn-out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#3

P0017

Low oil/dirty oil

Get an oil change or add oil

Engine oil and filter change $20-$60

Timing chain is stretched

Replace timing chain

Timing chain: $1,624 to $1,879

Slipped reluctor ring on the crankshaft

Replace reluctor ring

Reluctor ring $200-$600

   

#4

P0430

Damaged or worn out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair

#5

P0496

Faulty EVAP Purge Volume Control Valve

Replace EVAP purge volume control valve

EVAP Purge Volume Control Valve $150-$200

Leaking EVAP system hose

Replace EVAP line 

EVAP Line $20-$100

Faulty EVAP pressure sensor

EVAP pressure sensor

EVAP Pressure Sensor $280-$330

Chevrolet Trax CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#2

P1101

Faulty mass airflow sensor

Replace the mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor harness

Replace the mass airflow sensor harness

Replace mass airflow sensor: $230 – $330

Dirty air filter

Replace air filter

Replace air filter: $20 – $80

#3

P0496

Faulty EVAP Purge Volume Control Valve

Replace EVAP purge volume control valve

EVAP Purge Volume Control Valve $150-$200

Leaking EVAP system hose

Replace EVAP line

EVAP Line $20-$100

Faulty EVAP pressure sensor

EVAP pressure sensor

EVAP Pressure Sensor $280-$330

#4

P0420

Damaged or worn-out catalytic converter

Replace catalytic converter

Replace catalytic converter: $400-$2400

Broken O2 sensor

Replace downstream O2 sensor

Oxygen sensor replacement: $275-$500

Exhaust leak

Seal exhaust leak

Exhaust leak: $100-$200 (if welded to repair)

#5

P0299

Faulty turbo or supercharger

Replace turbo or supercharger

Turbo or supercharger: $300 – $3400

Faulty boost pressure sensor

Replace boost pressure sensor

Boost pressure sensor: $200 – $220

Chevrolet Uplander CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0449

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#2

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#3

P0455

Missing, loose, or damaged gas cap

TIghten or replace gas cap

Missing or damaged gas cap: $0-$20

Leak in EVAP line

Fix leap in EVAP line

EVAP line: $20-$100

EVAP vent control valve is damaged or stuck

Replace EVAP vent control valve

EVAP vent control valve: $150-$200

EVAP purge volume control valve is damaged or stuck

Replace EVAP purge volume control valve

Purge volume control valve: $150-$200

#4

P0128

Faulty engine coolant thermostat

Replace engine coolant thermostat

Replace engine coolant thermostat: $40 – $190

Chevrolet Venture CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P0135

Faulty upstream oxygen sensor

Replace oxygen sensor

Oxygen Sensor $200-$300

Blown fuse

Replace fuse

Fuse $5

Damaged or shorted wiring or connections

Replace or repair wiring

Wiring repair/replacement $100-$1000

#2

P0440

Damaged charcoal cannister

Replace charcoal cannister

Replace charcoal cannister: $753 – $1000

Loose or missing gas cap

Replace or tighten gas cap

Replace or tighten gas cap: $0 – $20

Faulty purge valve

Replace purge valve

Replace purge valve: $109 – $172

#3

P0171

Dirty mass airflow sensor

Clean mass airflow sensor

Clean mass airflow sensor: $20 – $100

Faulty mass airflow sensor

Replace mass airflow sensor

Replace mass airflow sensor: $230 – $330

Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket

Seal vacuum leak

Vacuum leak $100 – $200

#4

P0128

Faulty engine coolant thermostat

Replace engine coolant thermostat

Replace engine coolant thermostat: $40 – $190

#5

P0300

Spark plug is worn or broken

Replace spark plugs

Spark plugs: $66-$250

Ignition coils are broken

Replace ignition coils

Ignition Coils: $230-$640 (some cars require Intake manifold removal)

Spark plug wires are worn

Replace spark plug wires

Spark plug wires: $180-$240

Fuel injectors are broken

Replace fuel injectors

Fuel injectors: $1500-$1900

Chevrolet Volt CEL – Causes, Diagnostic Codes, Potential Repairs, & Repair Costs

 

DTC Codes 

Most Common Causes 

Repair

Repair Cost

#1

P1FFF

Faulty coolant level sensor

Replace coolant level sensor

Coolant level sensor: $330 – $350

#2

P0401

Faulty EGR valve

Replace EGR valve

EGR valve: $332 to $413

Engine vacuum leak

Fix vacuum leak

Vacuum leak: $90 to $125

FAQs – Chevrolet Check Engine Light

How long can you drive with the check engine light?

Depending on how serious your Check Engine Light is, you may not want to drive. According to FIXD’s data on Check Engine Light causes, 40% of all Check Engine Lights are serious. Before you continue driving, pull over and figure out why it’s on.

If you have a Flashing Check Engine Light, the issue is likely serious. Misfires, a common cause of a flashing light, can cause severe and expensive engine damage. Unburnt fuel can Chevrolet it into your exhaust and destroy your catalytic converter, which can cost over $1000 to replace. If your light is flashing, you probably want to get a tow, it will be cheaper in the long run.

If you have a Solid Check Engine Light or one that goes on and off seemingly at random or only under certain conditions (like hard acceleration), you may not need to get a tow and can probably drive a few days without a problem. But, you should pull over to check for common problems just to Chevrolet sure the light is not an early warning sign of a larger issue like your car overheating, leaking fluids, or not pumping coolant or oil. Just get to a safe spot and check for the most common cause first: A loose gas cap. If that’s all it is, tighten it up and be on your way, the light should reset itself. If not, check out: What to Do When Your Check Engine Light Comes on. Checking for symptoms like rough idling, loud exhaust, or other warning lights will help you rule out a more serious problem. 

Is it safe to drive your Chevrolet with the check engine light on?

It’s usually safe to drive your car for a few days with your Check Engine Light on as long as it’s not flashing. Some problems like engine misfires, which generally cause your Check Engine Light to flash, can make your car harder to control and can even start a fire in your car if left untreated for long enough. 

Although most times it’s safe to drive with your Check Engine Light on, you should always find out why it’s on ASAP. If something is seriously wrong with your car, the longer you drive, the higher the risk of costly repairs. According to FIXD’s data on Check Engine Light causes, 40% of all Check Engine Lights are serious.

What Does the Check Engine Light Mean?

When your Check Engine Light is on it means your car has identified a problem with the engine or transmission. There are over 1000 problems that can trigger a check engine light. Some are minor like a loose gas cap. Some, like an engine misfire, are more serious and can cause engine failure and/or damage.

The only way to know for sure what’s causing the check engine light is to diagnose it yourself or have a mechanic diagnose it. If you’d like to save some money; learning how to scan your car’s computer with a code reader isn’t hard and doing so will show you what system in your car is broken and you can narrow it down to likely repairs from there. This can help you decide if you can fix it or at the very least keep you from being overcharged at the mechanic. You can buy a small scanner like FIXD that fits in a glovebox, pocket, or purse if you want a clear answer on the severity of your light before you start driving again. Or check out: Where To Get Your CEL Checked if you need to find somewhere to get it checked fast.

What Does the Check Engine Light Look Like?

The check engine light is typically a yellow, orange, or red light in the shape of an engine on your car’s dashboard. Depending on the car, it might include the words “Check” or “Service Engine” inside or next to the engine symbol. The light might be solid or flashing depending on the cause of the check engine light.

FIXD Research Team

At FIXD, our mission is to make car ownership as simple, easy, and affordable as possible. Our research team utilizes the latest automotive data and insights to create tools and resources that help drivers get peace of mind and save money over the life of their car.

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About the Author

FIXD Research Team

FIXD Research Team

At FIXD, our mission is to make car ownership as simple, easy, and affordable as possible. Our research team utilizes the latest automotive data and insights to create tools and resources that help drivers get peace of mind and save money over the life of their car.

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