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OBD II Fault Code

  • OBD II P0659

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

    The transmission uses several actuators to engage and hold gears. If the engine control module (PCM) detects an incorrect signal from the actuator, the PCM will set code P0659.

    Transmission may not shift properly Symptoms

    • Transmission may not shift properly

    Common Problems That Trigger the P0659 Code

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