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B2780 Code – Push Switch / Key Unlock Warning Switch Malfunction

What are the Possible Causes of the Code B2780?
  • Faulty Unlock Warning Switch Assembly
  • Unlock Warning Switch Assembly harness is open or shorted
  • Unlock Warning Switch Assembly circuit poor electrical connection
  • Faulty Transponder Key ECU Assembly
  • 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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