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B1778 Code – Mirror Driver Down Circuit Failure

What are the Possible Causes of the Code B1778?
  • Faulty Mirror Driver Down Motor
  • Mirror Driver Down Motor harness is open or shorted
  • Mirror Driver Down Motor 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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