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Our automotive experts have put together the following information about the P2686 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 P2686 code.

OBD II Fault Code

  • OBD II P2686

    OBD-II Code Transmission may not shift properly is defined as a Actuator Supply Voltage "C" Circuit High

    The transmission uses several actuators to engage an hold gears. If the engine control module (PCM) detects an incorrect signal from the actuator, the PCM will set this code.

    Transmission may not shift properly Symptoms

    • Transmission may not shift properly

    Common Problems That Trigger the P2686 Code

    • Internal transmission failure
    • Powertrain Control Module (PCM) failure
    • Transmission actuator failure
    • Transmission Control Module (TCM) failure
    • Wiring issue
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