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OBD II Fault Code

  • OBD II P0829

    OBD-II Code Transmission may not shift properly is defined as a 5-6 Shift

    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 P0829.

    Transmission may not shift properly Symptoms

    • Transmission may not shift properly

    Common Problems That Trigger the P0829 Code

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

    Common Repairs Needed for the P0829 Code

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