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OBD II Fault Code

  • OBD II P0938

    OBD-II Code Transmission Control Module (TCM) failure is defined as a Hydraulic Oil Temperature Sensor Range/Performance

    The clutch uses hydraulic pressure to engage and disengage the clutch as well as shift gears. The Hydraulic Oil Temperature Sensor tells the Transmission Control Module (TCM) the temperature of the system. If the sensor sends back an implausible signal, code P0938 is stored.

    Common Problems That Trigger the P0938 Code

    • Hydraulic oil temperature sensor failure
    • Transmission Control Module (TCM) failure
    • Wiring issue
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