P0335 – Meaning, Causes, Symptoms, & Fixes

Code P0335 Definition

Crankshaft Position Sensor “A” Circuit Malfunction (Bank 1)

What Does P0335 Mean?

Crankshaft position is used to inform the Engine Control Module (ECM) of when it is time to spark and deliver fuel. It works hand in hand with the reluctor ring that creates a square wave voltage signal that the ECM interprets as the crankshaft position. Trouble code P0335 is set whenever the ECM does not sense crankshaft pulses or senses a problem with the pulses in the output with Sensor “A” Bank 1.

P0335 Symptom

  • Check Engine Light
  • Vehicle may stall/hesitate
  • Hard starting vehicle
  • Rough running vehicle
  • Engine dies

P0335 Causes

  • Damaged crankshaft position sensor
  • Defective crankshaft position sensor
  • Broken timing belt or chain
  • Rough running/misfiring engine
  • Failed ECM

Code P0335 Severity – High   

This trouble code can cause some major internal mechanical drivability issues. To prevent any further damage to the engine, diagnosis should be done as soon as possible to fix the issue.

Code P0335 Common Diagnosis Mistakes

The crankshaft position sensor is replaced whenever there is a defective camshaft position sensor or a poor connection.

P0335 Diagnosis

  • Tools Needed to Diagnose:
    • FIXD

Difficulty of Diagnosis and Repair – (4-7)*

  1. Use live scan tool to check that there is a RPM reading when the engine is running.
  2. Conduct a visual inspection of the crank sensor and connectors and search for signs of fraying/damage to the wiring.
  3. If no visible damage is found, you can check the CKP 5 Volt square wave pattern. You will have to reference your vehicle’s repair manual to determine which resistance reading is sufficient. This reading will come from the vehicle’s PCM.
    1. If you are not familiar with vehicles, it is best to leave this step to a professional.
  4. If the reading is within the specifications of the vehicle, no need to replace the crankshaft position sensor
    1. However if the reading is NOT within the specifications of the vehicles, the crankshaft position sensor should be replaced.
      1. Replace any frays/damaged wiring and if the reading is within the specifications now, there may be a short in the wiring.

*If these steps do not locate your issue, it may be within your PCM and you will need to take it to a mechanic for further diagnosis.

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Comments 10

gail mccormick

December 3, 2018

all of the diagnostics that my fixed has come up with are valid. thank you for the help.

Sirajudheen

January 10, 2019

Excellent to understand about cks

L. Marad

February 4, 2019

My diagnosis came while my car would not start and had no dash lights. AAA said it was the starter and my mechanic confirmed that.

Mike

May 1, 2019

I have a 2006 Chevy Impala with the 3.5 and the p0335 code stays on even after changing the crank position sensor i also checked for voltage at the plug and it is good as well..so I’m thinking possible ECM problem?

brad

July 4, 2019

I am having the same problem. A camshaft position sensor just came up now so I will try replacing that also.

Mathew.w.hernandez@gmail.com

July 9, 2019

Cleared code to check if still cuing purchased new sensor and replaced issue resolved

Victor Punzo

July 26, 2019

So I Replaced both Camshaft and Crankshaft sensor’s within a week and less then 2 months ago I replaced the throttle body sensor and I still get the P0335?? this is on a 2007 GMC Yukon. and it cranks for a while to start? any help would be appreciated thanks

Teresa

August 19, 2019

Check wiring harness.

IkeGh

July 30, 2019

I have being battling with a stalling/misfiring engine for months now. And its being drainging my pocket because i have to frequently visit the mechanic. A 2000 Sonata. Ive changed fuel pump cos it seem the problem gets worse when the engine heats up and will have to wait some minutes before engine can start. Ive had my spark plugs and coils checked and its Ok. but problem still remained. A month ago the OBD2 scanner gave an ECT sensor error. I replaced that too. Works well for a while and problem resurfaces. Recently i was having a tough time starting it in the mornings and sometimes in the day even after moving it around some few miles.

Then the Mechanic said there was no power distribution so he suspects the Crankshaft sensor. This was then confirmed by the OBD 2 scanner. i got it too replaced and for some 4 days now its running better. Just hoping thats it with the misfire and difficulty in starting problem

But one other problem exist and cant tell how to solve it yet
My speedometer sometimes works and sometimes too stays at zero

IkeGh

July 30, 2019

My check engine light hasnt shown up all this while

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