B1899 Code – Microphone Input Signal Circuit Open

What are the Possible Causes of the Code B1899?
  • Faulty Microphone
  • Microphone harness is open or shorted
  • Microphone circuit poor electrical connection
  • Faulty Body Control Module (BCM)
  • 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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