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U1728 Code – Left Headlamp High Beam Control Module Lost Communication With Left Headlamp Leveling Actuator

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What are the Possible Causes of the Code U1728?
  • Faulty Left Headlamp Leveling Actuator
    • Left Headlamp Leveling Actuator harness is open or shorted
  • Left Headlamp Leveling Actuator circuit poor electrical connection
  • Faulty Left Headlamp High Beam Control Module

    • 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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