U1815 Code – Lost Communication With Drive Motor Control Module 1 On Bus B

What are the Possible Causes of the Code U1815?
  • Faulty Drive Motor Control Module 1
  • Drive Motor Control Module 1 harness is open or shorted
  • Drive Motor Control Module 1 circuit poor electrical connection
  • 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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