B0239 – Air Flow Control 1 Circuit Performance

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What are the Possible Causes of the Code B0239?
  • Faulty Defrost Actuator
    • Defrost Actuator harness is open or shorted
  • Defrost Actuator circuit poor electrical connection
  • Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module

    • Need help with this OBD II code? Our mechanics are available within west Michigan to help. Outside of our service area? Visit our Car Help Section where you can ask questions and get answers.

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