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U2178 Code – Lost Communication With Trailer Interface Control Module

What are the Possible Causes of the Code U2178?
  • Faulty Trailer Interface Control Module
  • Trailer Interface Control Module harness is open or shorted
  • Trailer Interface Control Module 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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