What Does Code P0335 Mean?
- P0335 definition: Crankshaft Position Sensor “A” Circuit Malfunction (Bank 1)
- Issue Severity: SEVERE – Stop driving immediately
- Repair Urgency: Fix this code immediately (same day if possible) to avoid internal engine damage.
- Diagnosis: 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.
The 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 Causes
There are many potential causes of code P0335.
- Damaged or defective crankshaft position sensor
- Broken timing belt or chain
- Rough running/misfiring engine
- Failed ECM
P0335 Symptoms
- Check Engine Light
- Vehicle may stall/hesitate
- Hard starting vehicle
- Rough running vehicle
- Engine dies
How Do I Fix Code P0335?
With a crankshaft sensor fault, the first step is to get it diagnosed to figure out what is causing the problem.
If your vehicle has this fault and you’re not comfortable diagnosing this issue at home, we recommend finding a RepairPal certified shop nearby to pinpoint the problem and give an accurate estimate for repairs.
These shops can not only help you figure out what’s going wrong before you waste time and money on the wrong parts, but they also offer a minimum 12-month, 12,000-mile warranty and stand behind all their estimates with guaranteed fair pricing.
> Find a RepairPal Certified Shop Near You
How Much Does It Cost to Fix Code P0335?
P0335 can be caused by anything from a bad sensor to a faulty ECM to a broken timing belt or chain. It’s impossible to give an accurate estimate without properly diagnosing the issue first.
If you take your car to a shop for diagnosis, most shops will start with an hour of “diag time” (the time spent in labor diagnosing your specific issue). Depending on the shop’s labor rate, this typically costs somewhere between $75-$150. Many, if not most, shops will apply this diagnosis fee to any required repairs if you have them perform the repairs for you. From there, a shop will be able to give you an accurate estimate for repairs to fix your P0335 code.
Possible Repair Costs for P0335
For error code P0335, one or more of the below repairs may be needed to solve the underlying issue. For each possible repair, the estimated cost of repair includes the cost of the relevant parts and the cost of labor required to make the repair.
- Crankshaft position sensor: $168 to $224
- Timing belt: $272 to $356
- Timing chain: $1,624 to $1,879
- ECM: $993 to $1,012
DIY Steps to Diagnose Code P0335
Engine code P0335 could be caused by a number of things, including a bad sensor, a faulty ECM, or a broken timing belt or chain. If you’d like to try to fix code P0335 at home without throwing money at parts, you’ll want to follow the steps below for proper diagnosis. Keep in mind this is an intermediate-level diagnosis and repair and not recommended for beginners. Diagnosis requires more specialized equipment beyond what the FIXD Sensor can provide and it can be a time and labor-intensive process for inexperienced DIYers.
DIY difficulty level: Intermediate
This repair requires mechanical knowledge and is not recommended for beginners.
Tools/parts needed (our top picks from Amazon):
- FIXD
- Live Data (Found on FIXD App with Sensor)
STEP 1: USE FIXD TO VERIFY ENGINE SPEED DATA.
Using FIXD Live Data, look at your engine RPM data. This generally comes from the crankshaft position sensor. If this data is erratic or incorrect, it’s a sign of a problem with the sensor or related wiring.
STEP 2: CHECK SENSOR WIRING.
Conduct a visual inspection of the crank sensor and connectors and search for signs of fraying or damage to the wiring.
STEP 3: CHECK CKP 5-VOLT SQUARE WAVE PATTERN.
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 ECM. If you are not familiar with vehicles, it is best to leave this step to a professional.
If the reading is within the specifications of the vehicle, there is no need to replace the crankshaft position sensor. However, if the reading is NOT within the specifications of the vehicles, the crankshaft position sensor should be replaced. Replace any frayed or damaged wiring. If the reading is now within the specifications, there may be a short in the wiring.
If these steps do not pinpoint your issue, it may be within your ECM. You will need to take it to a mechanic for further diagnosis.
Common P0335 Diagnosis Mistakes
Replacing the crankshaft position sensor when there is a defective camshaft position sensor or a poor connection somewhere in the wiring.
Still Need Help Fixing Code P0335?
If you’ve followed the steps above and are still experiencing check engine code P0335, please contact the FIXD Mechanic Hotline if you’re a FIXD Premium subscriber or find a RepairPal certified shop near you to get the right repairs at a fair price.
Popular Engine Codes p0420 code p0172 code p00171 code p0128 code p0300 code p0456 code p0430 code p0442 code p0455 code p0113 code
Fixed It But The Check Engine Light Is Still On?
Check engine light sometimes need to be reset manually, check out our article:
How to Reset Your Check Engine Light | 4 Ways To Clear It (With or Without a Scanner)
Recovering autocross and track day enthusiast. Once turned a VW Jetta into a pickup truck. Lives in a van down by the river. Dream car: 2001 Subaru WRC rally car.
