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Our automotive experts have put together the following information about the P018F diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P018F code.

OBD II Fault Code

  • OBD II P018F

    OBD-II Code Decreased engine performance is defined as a Fuel System Over Pressure Relief Valve Frequent Activation

    The fuel system has a Fuel Pressure relief valve to vent excessive Fuel Pressure. If the engine control module (PCM) sees too high of a pressure, it will vent the system. When the PCM is constantly relieving pressure, the PCM will set code P018F.

    Decreased engine performance Symptoms

    • Decreased engine performance

    Common Problems That Trigger the P018F Code

    • Blockage in the fuel system
    • Fuel pressure sensor failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue

    Common Repairs Needed for the P018F Code

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