DTC Description
DTC DETECTION LOGIC
| DTC | CONSULT screen terms(Trouble diagnosis content) | DTC detection condition | |
| U0121 | LOST COMM (ABS) (Lost Communication With ADAS control unit) | Diagnosis condition | When the ignition switch is ON |
| Signal | CAN communication signal | ||
| Threshold | TCM is unable to receive the CAN communications signal from ADAS control unit | ||
| Diagnosis delay time | Continuously for 2 seconds or more | ||
POSSIBLE CAUSE
- ADAS control unit
- Harness or connector (CAN communication line is open or shorted)
FAIL-SAFE
Not changed from normal driving