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OBD II Fault Code

  • OBD II P0529

    OBD-II Code Cooling fans may stay on all the time is defined as a Fan Speed Sensor Circuit Intermittent

    The purpose of the electric cooling fan system is to provide extra cooling capacity to the conventional radiator cooling system on hot days, and/or when the A/C is on, an/or when the vehicle is being driven in stop and go traffic which causes insufficient Airflow over the radiator. When the engine control module (PCM) cannot control the cooling fan as desired, it will set code P0529.

    Cooling fans may stay on all the time Symptoms

    • A/C may not operate
    • Cooling fans may stay on all the time
    • Engine may overheat

    Common Problems That Trigger the P0529 Code

    • Engine cooling fan control module failure
    • Engine cooling fan failure
    • Engine cooling fan relay failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue

    Common Repairs Needed for the P0529 Code

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