U1838 Code – Lost Communication With Battery Charger Control Module On High Voltage Energy Management CAN Bus

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What are the Possible Causes of the Code U1838?
  • Faulty Battery Charger Control Module
    • Battery Charger Control Module harness is open or shorted
  • Battery Charger Control Module 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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