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OBD II Fault Code

  • OBD II P073F

    OBD-II Code Transmission may not shift properly is defined as a Unable to Engage Gear 1

    The Transmission Control Module (TCM) uses hydraulic pressure an electronic solenoids to select and hold various gears in the transmission. When the TCM detects that the transmission is not holding the requested gear, it will tell the engine control module (PCM) to set code P073F.

    Transmission may not shift properly Symptoms

    • Transmission may not shift properly

    Common Problems That Trigger the P073F Code

    • Internal transmission failure
    • Transmission Control Module (TCM) failure
    • Transmission fluid level is low
    • Transmission solenoid failure
    • Wiring issue

    Common Repairs Needed for the P073F Code

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