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Our automotive experts have put together the following information about the P2789 diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P2789 code.

OBD II Fault Code

  • OBD II P2789

    OBD-II Code Transmission may not shift properly is defined as a Clutch "A" Adaptive Learning at Limit

    The Transmission Control Module (TCM) goes through a learning process to properly shift the transmission based on the driver's driving habits. If the Transmission can not properly adapt to what is being requested, code P2789 is stored.

    Transmission may not shift properly Symptoms

    • Increased fuel consumption
    • Transmission may not shift properly

    Common Problems That Trigger the P2789 Code

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

    Common Repairs Needed for the P2789 Code

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