P003C - OBD II Trouble Code

Our automotive experts have put together the following information about the P003C diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P003C code.

OBD II Fault Code

  • OBD II P003C

    Fault Code Definition

    • "A" Camshaft Profile Control Performance/Stuck Off

    What does this mean? Newer engines have valves that are electro-hydraulically controlled instead of being driven by a timing belt or chain. This improves fuel efficiency an engine performance. When the engine control module (PCM) detects that the valves are not being operated as desired, it will set code P003C.


    • Decreased engine performance
    • Increased fuel consumption

    Common Problems That Trigger the P003C Code

    • Camshaft variable timing solenoid failure
    • Engine oil level is too low
    • The engine oil does not meet the manufacturer's requirements
    • Variable valve timing actuator failure

    Common Repairs Needed for the P003C Code

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