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B0519 Code – Rear Upper Duct Air Temperature Sensor Circuit

What are the Possible Causes of the Code B0519?
  • Faulty Rear Upper Duct Air Temperature Sensor
  • Rear Upper Duct Air Temperature Sensor harness is open or shorted
  • Rear Upper Duct Air Temperature Sensor 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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