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U1894 Code – Hybrid Control Module Lost Communication With Starter/Generator Control Module

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What are the Possible Causes of the Code U1894?
  • Faulty Starter/Generator Control Module (SGCM)
    • Starter/Generator Control Module harness is open or shorted
  • Starter/Generator Control Module circuit poor electrical connection
  • Faulty Hybrid Control Module (HCM)

    • 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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