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B3120 Code – Keyless Entry Antenna 2

What are the Possible Causes of the Code B3120?
  • Faulty Passenger Exterior Door Handle Assembly
  • Passenger Exterior Door Handle Assembly harness is open or shorted
  • Passenger Exterior Door Handle Assembly circuit poor electrical connection
  • Faulty Keyless Entry Control Module
  • 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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