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Home › Hyundai › 2019 › Tucson Value, 4WD › Repair and Diagnosis › Transmission › Transfer Case › 4WD Control Diagnosis › DTC U1121: Lost Communication With Electric Stability Program Module › DTC Information And Inspection › DTC Setting Condition

DTC Setting Condition

Trouble shooting Condition Possible Cause
Main action
  • Receive SAS CAN signals
  1. Poor contact of connectors of each communication module
  2. Open/short in the CAN communication circuit
  3. ESC/ESP ECU
Prerequisite condition
  • Turn the ignition switch on or start the engine.
Threshold value
  • An ESC/ESP 2 signal is not received
Diagnosis time
  • 2 sec
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