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B2540 Code – Aux A/C Mode Position Reference Circuit Short To Battery

What are the Possible Causes of the Code B2540?
  • Faulty Aux A/C Mode Actuator
  • Aux A/C Mode Actuator harness is open or shorted
  • Aux A/C Mode Actuator 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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