OBD II Fault Code

  • OBD II P0537

    OBD-II Code A/C may not operate is defined as a A/C Evaporator Temperature Sensor Circuit Low

    The A/C Evaporator Temperature Sensor is used verify proper operation of the A/C system and to prevent the evaporator from getting too cold and freezing up. The engine computer (PCM) looks to see a temperature change when the A/C Compressor is activated. When the engine control module (PCM) does not see a change in temperature with the A/C compressor turned on, the PCM will set code P0537. On hybrid vehicles, this sensor may be controlled and used by the Hybrid Powertrain Control Module.

    A/C may not operate Symptoms

    • A/C may not operate

    Common Problems That Trigger the P0537 Code

    • A/C evaporator temperature sensor failure
    • A/C low side temperature sensor failure
    • High voltage powertrain control module failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue

    Not the OBD-II Code You're Looking For?

    No comments yet…

    Sign in to comment