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B0939 Code – Coolant Level Sensor Circuit High

What are the Possible Causes of the Code B0939?
  • Low Coolant Level
  • Faulty Coolant Level Sensor
  • Coolant Level Sensor harness is open or shorted
  • Coolant Level Sensor circuit poor electrical connection
  • 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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