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Home › Hyundai › 2015 › Tucson Limited, 4WD › Repair and Diagnosis › Transmission › Transfer Case › 4WD Control System Diagnosis › DTC U1121: Lost Communication With Electric Stability Program Module › DTC Information › DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • CAN Signal Check
  1. Poor connection
  2. Open or short in CAN Communication Line
  3. Error in ESC unit
Enable Conditions
  • IG "ON" or Engine "ON"
Threshold Value
  • It can't get some CAN signals from ESC module.
Detecting Time
  • 2 seconds
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