U1156 Code – Invalid Or Missing Data For Digital Signal Processing

What are the Possible Causes of the Code U1156?
  • Faulty Module that is not communicating
  • Module harness is open or shorted
  • 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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