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Home >> Hyundai >> 2021 >> Santa Fe Calligraphy, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis - 2.5T (Except HEV) (15 Of 16) >> DTC U012D-00: Lost Communication With Generator Control Module >> DTC Information And Inspection >> DTC Detecting Condition
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DTC Information And Inspection: DTC Detecting Condition

Troubleshooting Condition Possible Cause
Main Action
  • Signal monitoring
  1. Poor connector connection
  2. Faulty in LIN communication line
  3. Faulty battery sensor
Prerequisite Condition
  • Battery voltage is more than 10V
  • Delay time after ignition switch on is more than 1 second
Threshold Value
  • Duration of communication lost with alternator is more than 5 seconds
Diagnosis Time
  • Continuous
MIL On Condition
  • 2 driving cycles
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