Ford Trouble Code P0335: Crankshaft Position Sensor 'A' Circuit Malfunction

What does this error code mean?

OBD-II error code P0335 is a code that can be diagnosed from multiple brands. The brand where this error code is the most common is Ford. As can be read in the error code description, the error code refers to a faulty crankshaft position sensor. Is that the real reason for triggering this error code? Is this sensor really defective? Or could the problem lie elsewhere in the car, for example in the SIM ECU developed by Siemens?

On which cars is this error code read most often?

The Cause of OBD-II Trouble Code P0335

In practice, it appears that there can be two different causes for triggering the P0335 trouble code. One of those causes is water damage. Therefore, follow the steps below to get to the root of the problem.

icon-check-markOur advice in case of error code P0335

The first step is to check the ECU connector. Look closely at the connector pins to determine if you see any signs of water damage, such as green deposits. Do you see water damage? This is often due to a leaking coolant sensor. This sensor leaks coolant through the plug, then it can spread through the wiring harness and cause various malfunctions, including on the crankshaft sensor. Check the sensor for leaks and if detected, replace the sensor and the cable harness: if the cable harness is not replaced, it will continue to cause damage. In addition, also clean the plug of the ECU.

If the check for any water damage has been done thoroughly, but no water damage and/or leakage can be found, then the problem is most likely caused by the Siemens SIM ECU. In this case, an internal malfunction on the PCB of the ECU will cause error code P0335 to be triggered. ACTRONICS has developed a remanufacturing solution for this problem that will solve the error code. In that case, send the part to us and we will remanufacture the part for you within two days. Of course, we also provide a 2-year warranty on the remanufacturing. Do you have any questions about this issue? Please feel free to contact our product specialists!