OBD II Fault Code

  • OBD II P0B0B

    OBD-II Code Increased fuel consumption is defined as a AUXILIARY Transmission Fluid Pump Motor Supply Voltage Circuit

    The auxiliary Transmission Fluid Pump is used to maintain fluid pressure in the transmission. If the pump does not operate as requested by the engine computer (PCM), code P0B0B is stored.

    Increased fuel consumption Symptoms

    • Increased fuel consumption

    Common Problems That Trigger the P0B0B Code

    • Auxiliary transmission pump relay failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue
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