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OBD II Fault Code

  • OBD II P2539

    OBD-II Code Decreased engine performance is defined as a Low Pressure Fuel System Sensor Circuit

    The Fuel Pressure Sensor monitors the fuel pressure in the fuel system going to the fuel injectors. If the sensor sends back an implausible signal, code P2539 is stored.

    Decreased engine performance Symptoms

    • Decreased engine performance

    Common Problems That Trigger the P2539 Code

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