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OBD II Fault Code

  • OBD II P0476

    OBD-II Code Powertrain Control Module (PCM) failure is defined as a Exhaust Pressure Control Valve "A" Range/Performance

    The Exhaust Pressure Control Valve controls exhaust back pressure during engine warmup. If the engine control module (PCM) determines there is an incorrect signal from the Exhaust Pressure Control Valve, the PCM will set code P0476.

    Common Problems That Trigger the P0476 Code

    • Exhaust pressure control valve failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue

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