U2021 Code – Invalid /Fault Data Received

What are the Possible Causes of the Code U2021?
  • Faulty Control Module
  • Control Module harness is open or shorted
  • 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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