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B1045 Code – Left Rear Door Audio Output 3 Circuit

What are the Possible Causes of the Code B1045?
  • Faulty Radio Unit
  • Faulty Audio Amplifier (If equipped)
  • Faulty Left Rear Door Speaker (Subwoofer for vehicles with Amplifier)
  • Left Rear Door Speaker (Subwoofer for vehicles with Amplifier) harness is open or shorted
  • Left Rear Door Speaker (Subwoofer for vehicles with Amplifier) circuit poor electrical connection
  • 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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