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U1555 Code – Body Control Module Lost Communication With Left Rear Seat Heating/Venting/Cooling Switch On LIN Bus

What are the Possible Causes of the Code U1555?
  • Faulty Left Rear Seat Heating/Venting/Cooling Switch
  • Left Rear Seat Heating/Venting/Cooling Switch harness is open or shorted
  • Left Rear Seat Heating/Venting/Cooling 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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