What Does P0888 Code Mean?

    OBD-II Code P0888 is defined as a TCM Power Relay Sense Circuit

    If the Transmission Control Module (TCM) does not receive the correct amount of voltage, it will send a message to the engine control module (PCM) to set code P0888.

    P0888 Symptoms

    • Increased fuel consumption
    • Transmission may not shift properly

    Common Problems That Trigger the P0888 Code

    • Transmission Control Module (TCM) failure
    • Transmission Control Module (TCM) relay failure
    • Wiring issue

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