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B1559 Code – Door Lock Cylinder Circuit Failure

What are the Possible Causes of the Code B1559?
  • Faulty Door Lock Cylinder
  • Door Lock Cylinder harness is open or shorted
  • Door Lock Cylinder 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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