The P0335 trouble code indicates a possible issue with your vehicle’s crankshaft. But what exactly does this mean and how can you resolve the problem? Read on to learn more about the OBD-II code P0335.
What Does the P0335 Code Mean?
The OBD-II code P0335 is a generic diagnostic trouble code that stands for “Crankshaft Position “A” Circuit Malfunction.” The code is set when your car’s primary computer—also known as the powertrain control module (PCM)—is unable to detect a signal from the crankshaft position sensor.
As the name implies, the crankshaft position (CKP) measures the position and speed of the crankshaft—a rotating shaft inside the engine that converts the linear motion of the pistons into the rotational force that propels your vehicle down the road.
To determine the crankshaft position, the CKP reads a reluctor wheel mounted to either the crankshaft or harmonic balancer. The CKP then sends its signal to the PCM, where the data is used to determine ignition timing (i.e., when to fire the spark plugs).
In some vehicles, the CKP signal may also be used as an input for additional functions, such as fuel delivery, variable valve timing, and the tachometer.
What are the Possible Causes of the P0335 Code?
A number of issues can trigger a P0335. Here are some of the most common causes of this error code:
- Defective crankshaft position sensor
- Faulty or damaged timing belt
- Faulty or damaged timing chain
- Damaged or broken reluctor ring
- Circuit issues, such as damaged wiring and loose connections
- Issues with the PCM, such as software in need of an update
Take note that, while this list is already quite extensive, the P0335 code can appear due to other potential causes.
What are the Common Symptoms of the P0335 Code?
The symptoms that your car could experience with the trouble code P0335 may vary. Below are some of the most common signs that could accompany this code:
- Check Engine Light is on
- Engine stalls or hesitates
- Hard starting
- Engine misfire/rough running
- Car will not start
- Tachometer doesn’t work
How to Diagnose the P0335 Code
As previously discussed, there are a lot of potential causes for a P0335. This is why diagnosing the exact issue that’s causing this OBD-II code can be a challenge.
Check out the videos below to get an idea of how to troubleshoot this code on your own:
How to Fix the P0335 Code
There is no specific fix for the P0335 code—as with most of the other OBD-II codes. There is a multitude of possible causes for a code to appear, and you’ll have to identify the exact underlying issue before you can proceed to find a fix.
Make sure to check your owner’s manual before doing any repairs. You may also want to consider getting a repair manual, such as those from Chilton.
Or get yourself an ALLDATA single-vehicle subscription for detailed repair information that you can use for DIY projects.
Other Notes About P0335
You shouldn’t continue to drive your vehicle once it triggers this code. An issue with the CKP can cause your vehicle to stall—and that can be dangerous.
Get your car diagnosed immediately if you run into this trouble code (or the related trouble codes P0336, P0337, P0338, etc.).