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OBD II Fault Code

  • OBD II P229D

    OBD-II Code Decreased engine performance is defined as a Fuel Pressure Regulator 2 Exceeded Learning Limits - Too High

    The Fuel Pressure Regulator allows the fuel system to release excessive fuel in the fuel rail back to the fuel tank. When the engine control module (PCM) determines that the Fuel Pressure Regulator is not performing properly, the PCM will set code P229D.

    Decreased engine performance Symptoms

    • Decreased engine performance
    • Engine may stall
    • Increased fuel consumption

    Common Problems That Trigger the P229D Code

    • Fuel pressure regulator failure
    • Fuel pump failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue

    Common Repairs Needed for the P229D Code

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