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Our automotive experts have put together the following information about the P2665 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 P2665 code.

OBD II Fault Code

  • OBD II P2665

    OBD-II Code Decreased engine performance is defined as a Fuel Shutoff Valve "B" Control Circuit/Open

    The Fuel Pressure Relief valve is designed to release excessive fuel pressure. When the engine control module (PCM) detects an issue with the Fuel Pressure Relief Valve signal, the PCM will set code P2665.

    Decreased engine performance Symptoms

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

    Common Problems That Trigger the P2665 Code

    • Fuel shut-off valve failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue
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