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OBD II Fault Code

  • OBD II P0909

    OBD-II Code Transmission Control Module (TCM) failure is defined as a Gate Select Control Error

    Manual Transmissions have a sensor mounted on the shift lever that tells the engine computer (PCM) what gear the transmission is in. If the Shift Lever Position Sensor sends the PCM an implausible signal, code P0909 is stored. The Shift Lever Position Sensor is usually built into the Shift Lever Assembly.

    Common Problems That Trigger the P0909 Code

    • Shift lever assembly failure
    • Transmission Control Module (TCM) failure
    • Wiring issue
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