B3650 Code – High Beam Request Signal Circuit Performance Signal Invalid

What are the Possible Causes of the Code B3650?
  • Faulty Turn Signal/Multifunction Switch
  • Turn Signal/Multifunction Switch harness is open or shorted
  • Turn Signal/Multifunction Switch 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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