What Does P0471 Code Mean?

    OBD-II Code P0471 is defined as a Exhaust Pressure Sensor "A" Circuit Range/Performance

    The Exhaust Pressure Sensor tells the engine control module (PCM) how much pressure is in the exhaust manifold. If the PCM determines there is an incorrect signal from the Exhaust Pressure Sensor, the PCM will set code P0471.

    Common Problems That Trigger the P0471 Code

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

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