B3187 Code – Left Rear Window Down Switch Circuit Low

What are the Possible Causes of the Code B3187?
  • Faulty Left Rear Window Switch
  • Left Rear Window Switch harness is open or shorted
  • Left Rear Window Switch circuit poor electrical connection
  • Faulty Left Rear Door Module (LRDM)
  • 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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