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B3981 Code – Incorrect Environmental Identifier Received from Electronic Brake Control Module

What are the Possible Causes of the Code B3981?
  • Faulty Electronic Brake Control Module (EBCM)
  • Electronic Brake Control Module harness is open or shorted
  • Electronic Brake Control Module 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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