B2721 Code – PASS-Key Detection Circuit

What are the Possible Causes of the Code B2721?
  • Faulty Ignition Key
  • Faulty Ignition Lock Cylinder
  • 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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