Our automotive experts have put together the following information about the P040C 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 P040C code.

OBD II Fault Code

  • OBD II P040C

    OBD-II Code Powertrain Control Module (PCM) failure is defined as a Exhaust Gas Recirculation Temperature Sensor "A" Circuit Low

    An Exhaust Gas Recirculation (EGR) Temperature Sensor is an electrical sensing probe that monitors EGR temperature going in and out of the EGR Cooler and transmits the signal to the engine control control module. When the engine control module (PCM) detects an implausible signal from the EGR Temperature Sensor, the PCM will set code P040C.

    Common Problems That Trigger the P040C Code

    • EGR temperature sensor failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue
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