Our automotive experts have put together the following information about the P0812 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 P0812 code.

OBD II Fault Code

  • OBD II P0812

    OBD-II Code Reverse lights may not operate is defined as a Reverse Input Circuit

    The Reverse Input Sensor tells the engine control module (PCM) that the transmission is in reverse. When the PCM detects an incorrect signal from the Reverse Input Sensor, the PCM will set code P0812.

    Reverse lights may not operate Symptoms

    • Reverse lights may not operate

    Common Problems That Trigger the P0812 Code

    • Powertrain Control Module (PCM) failure
    • Reverse switch failure
    • Wiring issue
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