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OBD II Fault Code

  • OBD II P2743

    OBD-II Code Transmission may not shift properly is defined as a Transmission Fluid Temperature Sensor "B" Circuit High

    The Transmission Fluid Temperature Sensor tells the engine control module (PCM) the temperature of the fluid in the transmission. If the PCM detects an incorrect signal from the Transmission Temperature Sensor, the PCM will set this code.

    Transmission may not shift properly Symptoms

    • Transmission may not shift properly
    • Transmission temperature warning light may illuminated on the instrument cluster

    Common Problems That Trigger the P2743 Code

    • Powertrain Control Module (PCM) failure
    • Transmission Control Module (TCM) failure
    • Transmission temperature sensor failure
    • Wiring issue

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