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OBD II Fault Code

  • OBD II P0C27

    OBD-II Code Transmission Control Module (TCM) failure is defined as a AUXILIARY Transmission Fluid Pump Motor Current Low

    The Auxiliary Transmission Fluid Pump pressurizes the fluid in the transmission. If the pump does not operate as requested, code P0C27 is stored.

    Transmission Control Module (TCM) failure Symptoms

    • Vehicle may be immovable

    Common Problems That Trigger the P0C27 Code

    • Auxiliary transmission pump failure
    • Transmission Control Module (TCM) failure
    • Wiring issue
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