FixVault
Home
›
Hyundai
›
2009
›
Elantra GLS, Automatic
›
Repair and Diagnosis
›
Engine Performance
›
System
›
DTC Troubleshooting Procedures
›
DTC U0101 Serial Communication Problem With TCU (Timeout)
›
DTC Description
DTC Description
The ECM determines CAN communication error and sets DTC U0101 if no message received from TCM