U1003 Code – Lost Communication With VVEL Control Module

What are the Possible Causes of the Code U1003?
  • Faulty Variable Valve Event & Lift (VVEL) Control Module
  • VVEL Control Module harness is open or shorted
  • VVEL Control Module circuit poor electrical connection
  • Faulty Engine Control Module (ECM)
  • 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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