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OBD II Fault Code

  • OBD II P2668

    OBD-II Code Fuel indicator light will not operate is defined as a Fuel Mode Indicator Lamp Control Circuit

    Some vehicles are designed to run on more than one type of fuel, such as a car that runs on Compressed Natural Gas and Gasoline. The Fuel Gauge Select Switch allows the driver to select which fuel system to run the engine from. The lamp on the switch indicates which fuel system is being used. If the light fails to operate as requested, code P2668 will be stored.

    Fuel indicator light will not operate Symptoms

    • Fuel indicator light will not operate

    Common Problems That Trigger the P2668 Code

    • Fuel type select switch failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue
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