B2543 Code – Aux A/C Control Switch Reference Circuit Short To Ground

Leave a Comment / By /
What are the Possible Causes of the Code B2543?
  • Faulty Aux A/C Control Switch
    • Aux A/C Control Switch harness is open or shorted
  • Aux A/C Control Switch 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.

Leave a Comment