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B1721 Code – Seat Driver Rearward Switch Circuit Failure

What are the Possible Causes of the Code B1721?
  • Faulty Seat Driver Rearward Switch
  • Seat Driver Rearward Switch harness is open or shorted
  • Seat Driver Rearward 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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