P0335: OBD-2 error code interpretation and solutions

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Vehicle engine and/or automatic transmission

Code: P0335 - Crankshaft position (CKP) sensor – circuit malfunction

The P0335 code indicates a potential fault with the crankshaft position sensor, detected by your vehicle's powertrain control module (PCM). This code triggers the Check Engine light, allowing you to quickly identify the issue. Once the code is detected, it’s important to determine the cause of the fault and decide whether you can handle it yourself or need professional help from a mechanic.

This OBD code is found across many car manufacturers, including Skoda, Kia, Renault, BMW, Mercedes-Benz, Ford, Nissan, Toyota, Volkswagen, and others.

Causes of OBD P0335

The causes of the P0335 code are generally limited to a few primary issues, though some may require complex and costly solutions. During the diagnostic process, it's essential to carefully check each component step by step to pinpoint the root cause of the problem. Here are the key points to focus on:

Check the crankshaft position sensor wiring for any breaks or short circuits.
Inspect the wiring connectors for looseness or damage due to corrosion.
Ensure the crankshaft position sensor is functioning correctly.
Check the condition of the signal plate for any damage or defects.
Inspect the timing belt or chain for any signs of wear or damage.
Consider the possibility of a malfunction in the Engine Control Module (PCM).

These are the initial diagnostic steps that can help identify the cause of the issue related to the P0335 code.

Symptoms of Error P0335

Let's now take a look at how your vehicle may indicate an issue related to the P0335 code. Symptoms can vary significantly depending on the make and model of the car. Most commonly, the check engine light will illuminate right away, but sometimes it may only appear after several unsuccessful attempts to test the PCM, when the code is stored. In some cases, the car may fail to start at all, while in others, it may run erratically, showing a decrease in performance and engine power. Idle issues, such as rough idling or unstable RPM, may also be observed. Although the primary symptoms often align with the cause, this is not always the case.

How to Diagnose DTC P0335?

If you’ve decided to diagnose and potentially fix the issue yourself, it’s important to follow a systematic approach. Here’s how to correctly diagnose the P0335 trouble code:

Start by retrieving all the trouble codes using a scanner. Be sure to check current, historical, and pending codes, and thoroughly review the freeze frame data for additional insights.
Clear the codes and conduct a road test. If the symptoms persist during testing, refer to the engine data for new clues.
Check the crankshaft position sensor and its wiring. Ensure all electrical connections are intact, as this is one of the simplest and most cost-effective solutions.
Use the scanner to monitor the sensor readings and RPM signal. If the data appears normal, check the wire connections using a multimeter.
Test the PCM using the manufacturer’s test protocol, which can be found online or in service manuals.

By following these steps, you can methodically identify and potentially resolve the cause of the P0335 error.

Common Mistakes When Dealing with OBD Code P0335

Even experienced mechanics can make mistakes, especially if they skip crucial diagnostic steps or fail to follow the correct sequence of actions. When dealing with the P0335 trouble code, the most common cause is a malfunction of the crankshaft position sensor. However, it's also important to inspect the condition of the sensor plate and the timing belt or chain. Incorrect diagnosis or underestimating the issue can lead to serious consequences for engine performance. Therefore, it’s crucial to either consult professionals or strictly follow the manufacturer’s guidelines during diagnostics and repair.

How Serious is the P0335 Error?

The P0335 code indicates a serious mechanical or electrical fault. If your vehicle is experiencing startup or drivability issues, do not take risks—avoid driving until you’re certain the problem is resolved. Some drivers report that the car may start initially and then stall, or it may run erratically for a period before a complete failure to start. It’s important to take steps to identify the cause of the issue or take the car to a shop for professional inspection. Don’t attempt to fix these problems hastily, as improper repairs can lead to severe engine and transmission damage, as well as higher repair costs.

How to Fix the P0335 Code?

Replacing the crankshaft position sensor can be moderately expensive and time-consuming.
Repairing or replacing the wiring harness is a quick and relatively cost-effective solution.
Replacing the PCM can be quite costly.
Replacing the signal plate may be relatively inexpensive but labor-intensive.
Repairing or replacing the timing belt/chain is an expensive process and is best handled by specialists.

Conclusion

If your diagnostic process shows that the wiring and sensor are in good condition, that's a positive sign. However, if there is suspicion of issues with the timing belt/chain or key components such as the PCM, take your vehicle to an experienced mechanic immediately for a timing system check. A broken belt/chain or a faulty PCM can cause severe damage to the engine and potentially the transmission. Don’t hesitate to ask for help if you feel the issue exceeds your skills and knowledge.

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OBD P0335 code analysis and solutions

The page presents a detailed analysis of code P0335 for Opel, Renault, VW (Volkswagen), Ford, Peugeot, Mitsubishi, Skoda, BMW, Citroën, Toyota, Lada, Honda, Kia, and other models to investigate potential reasons and solutions related to obd 2 errors, with main attention on the issue. We provide technical documentation and approaches for diagnostics to identify and resolve the issue effectively. We aim to make our resource a comprehensive source of information on issues related to OBD 2 errors, equipping you with the means for effective repair and maintenance of your vehicle. If during the repair of OBD-2 codes you need to purchase parts, don’t forget to check out Avtopro!