OBD II Fault Code

  • OBD II P265A

    OBD-II Code Decreased engine performance is defined as a "B" Rocker Arm Actuator Position Sensor Circuit

    Newer vehicles use variable valve technology to allow for greater airflow through the engine at higher RPMs. This allows for better performance over a wider range. Some manufacturers are moving to a variable valve lift system that allows the valve to open wider. Internal to the variable lift rocker arm assembly are position sensors so the engine computer (PCM) can monitor what the assembly is doing. If the sensor inside the assembly fails, code P265A is set.

    Decreased engine performance Symptoms

    • Decreased engine performance
    • Increased fuel consumption

    Common Problems That Trigger the P265A Code

    • Powertrain Control Module (PCM) failure
    • Variable valve lift controller assembly failure
    • Wiring issue

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