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OBD II Fault Code

  • OBD II P0657

    OBD-II Code Transmission may not shift properly is defined as a Actuator Supply Voltage "A" Circuit/Open

    The transmission uses several actuators (or solenoids) to engage and hold gears inside the transmission. If the engine control module (PCM) detects one or more solenoids is not operating as requested, the PCM will set code P0657.

    Transmission may not shift properly Symptoms

    • Transmission may not shift properly

    Common Problems That Trigger the P0657 Code

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