P0C4E - OBD Trouble Code

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The trouble code P0C4E can be described as Drive Motor “A” Position Exceeded Learning Limit Issue. This code is a generic trouble code, meaning it applies to all vehicles equipped with the OBD-II system, especially those made from 1996 up to present. It’s also more common among Audi, Citroen, Chevrolet, Ford, Hyundai, Nissan, Peugeot, and Volkswagen vehicles. Specifications on the definition, troubleshooting, and repairs, of course, vary from one make and model, powertrain configuration type, to another. One thing which you must keep in mind that its symptoms as well as causes would surely vary as it depends upon a number of things.

It is important to understand that the drive motor position sensor determines the output shaft position and stores the OBD code P0C4E if it is unable to detect the correct shaft position. Thus, when the position sensor exceeds its learning limit, P0C4E error causes the check engine light illumination and can even cause the vehicle to go into fail safe mode.

What causes this problem with the Drive Motor "A" Position Exceeded Learning Limit?

• Fault in the drive motor position sensor
• Motor position sensor harness might be opened or sometimes shorted
• Motor position sensor circuit having damaged electrical connection
• Powertrain Control Module faulty
• Exhaust system and exhaust manifolds physically damaged
• Unwanted air leaks in exhaust and diesel particulate filter

1. Powertrain Control Module - Do you remember when was the last time you got your car Powertrain Control Module checked up? A dirty Powertrain Control Module can cause a lot of issues like displaying P0C4E code.
2. Motor Assembly - OBD Code P0C4E can appear because of faulty Motor Assembly. Replace it now!
3. Engine Control Module - Everything is fine with Engine Control Module and still P0C4E code triggering? Then you must get your Engine Control Module checked.
4. Electronic Control Unit - Check for faulty ECU and replace if required. Buy new ECU components now and replace the faulty one immediately.
5. Speed Sensor - Faulty speed sensor will cause the PCM to miss the optimal motor speed and thus will lead to OBD code P0C4E getting stored in the system. Buy new sensor now!

If you are facing OBD error code P0C4E, then there are significant common symptoms that can be felt or observed. We have worked out a list here to help you out in understanding this problem better.

Common Symptoms

• Check Engine Light illumination
• Loss of motor acceleration
• Vehicle going into limp mode
• Reduced fuel economy
• PCM failure

Want to correct the Trouble Code P0C4E? Read these points mentioned below:

• Fix the defective motor position sensor
• Make sure to repair the faulty motor assembly
• Restore the flawed motor position sensor harness
• Carefully adjust the faults in the motor position sensor circuit
• It is necessary to perform proper service of the unsound powertrain control module

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It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P0C4E code to be stored:

• The mechanic or the technician will use a diagnostic scanner or code reader like DVOM to visually scan for the error codes in the vehicle.
• After performing a careful inspection, every of the stored codes and freeze frame data are retrieved as it can help down the way for further diagnosis process.
• Most often he has to inspect the solenoid itself to see if they are faulty or damaged. Additional error codes that are stored in the vehicle are also addressed.
• The mechanic performs a continuity test between the PCM and solenoid to check the resistance.
• If the solenoid or the control modules are not faulty, he will then retune the code and test drive the vehicle.
• Inspect for faults in the motor position sensor and the circuit issue and repair or replace the parts as required.
• On test driving, if the P0C4E code does not return soon, he will know that an erratic condition exits.
• If everything seems to function properly, check for problems with the PCM as sometimes the PCM can read the information wrongly and depict wrong OBD error codes.

Common Mistakes When Diagnosing The P0C4E Code

• Non-performance of the hybrid transaxle assembly
• Failure in the powertrain control module
• Problematic motor position sensor circuit
• Faulty wiring and connectors in relation to the sensor and circuits
• There can be some faults in the wiring