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Our automotive experts have put together the following information about the P033C 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 P033C code.

OBD II Fault Code

  • OBD II P033C

    OBD-II Code Powertrain Control Module (PCM) failure is defined as a Knock Sensor 4 Circuit Low

    The knock sensor tells the engine control module (PCM) that the engine has an excessive vibration resulting from an incorrect fuel and air mixture. If the PCM does not receive a signal from the knock sensor, it will set code P033C. The check engine light may or may not be illuminated.

    Common Problems That Trigger the P033C Code

    • Knock sensor failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue

    Common Repairs Needed for the P033C Code

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