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Home >> Hyundai >> 2023 >> Kona N Line, 4WD >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> 4WD Control Diagnosis >> DTC U1121: Lost Communication With Electric Stability Program Module >> DTC Information And Inspection >> DTC Setting Condition
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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 module
Prerequisite Condition
  • Turn the ignition switch on or start the engine
Threshold Value
  • An ESC 2 signal is not received
Diagnosis Time
  • 2 sec
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