B0429 – Auxiliary Air Temperature Actuator Range/Performance

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What are the Possible Causes of the Code B0429?
  • Faulty Auxiliary Air Temperature Actuator
    • Auxiliary Air Temperature Actuator harness is open or shorted
  • Auxiliary Air Temperature Actuator circuit poor electrical connection
  • Faulty Auxiliary 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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