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Home >> Hyundai >> 2018 >> Kona Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 151 (Engine Control System Diagnosis - 2.0L (3 Of 3)) >> DTC U0101-00: Lost Communication With TCM (CCAN) >> DTC Information And Inspection >> DTC Detecting Condition

DTC Information And Inspection: DTC Detecting 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.
Item  Detecting Condition  Possible Cause 
Main Action
  • Check CAN message from TCM
  1. Poor connection or damaged harness
  2. Faulty PCM
  3. Faulty TCM
Prerequisite Condition
  • Engine is running with speed over 32 RPM.
  • Battery voltage is higher than 10V.
  • Elapsed time after turning ON ignition switch is over 0.5 seconds.
Threshold Value
  • No message from TCM for 500 msec.
Diagnostic Time
  • 2 Seconds
MIL-On Condition
  • 3rd Driving Cycle
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