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Home >> Hyundai >> 2018 >> Kona Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 135 (4WD Control Diagnosis) >> DTC U1121: Lost Communication With Electric Stability Program Module >> DTC Information And Inspection >> DTC Setting Condition

DTC Setting Condition

WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
Troubleshooting 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 ECU
Prerequisite condition
  • Turn the Ignition Switch ON or start the Engine
Threshold value
  • An ESC 2 signal is not received
Diagnosis time
  • 2 sec.