LEMON Manuals: Even more car manuals for everyone
Home >> Hyundai >> 2018 >> Kona Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 135 (4WD Control Diagnosis) >> DTC U0100: Lost Communication With ECM/PCM 'A' >> 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
  • Monitor CAN messages
  1. Poor contact of connectors of each communication module
  2. Open/short in the CAN communication circuit
  3. Engine ECU
Prerequisite condition
  • Turn the Ignition Switch ON or start the engine
Threshold value
  • EMS 1/2/5 CAN message is not received
Diagnosis time
  • 2 sec.
scientia non olet · About LEMON Manuals