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Home › Genesis › 2019 › G70 2.0T Advanced, AWD › Repair and Diagnosis › Transmission › Transmission Control Systems › 4WD Control System Diagnosis › DTC U0101-87: Lost Communication With TCU › DTC Information › DTC Detecting Condition

DTC Information: DTC Detecting Condition

Trouble Shooting Condition Possible Cause
Main Action
  • Monitor the TCU CAN message
  1. Poor contact of connectors of each communication module
  2. Open/short in the CAN communication circuit
  3. Faulty TCU
Prerequisite Condition
  • CAN BUS is normal
  • Start the engine
Threshold Value
  • A TCU CAN message was not received
Diagnosis Time
  • 2 sec.
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