B1688 Code – Lamp Dome Input Circuit Short To Ground

What are the Possible Causes of the Code B1688?
  • Faulty Lamp Dome
  • Lamp Dome harness is open or shorted
  • Lamp Dome circuit poor electrical connection
  • Faulty Smart Junction Box (SJB)
  • Faulty Smart Junction Box (SJB)
  • 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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