Pinpoint Test A : U0121: Notes
DTC Fault Trigger Condition-PCM
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0121 | Lost Communication With Anti-Lock Brake System (ABS) Control Module | The PCM sets this DTC if data messages received from the ABS module over the High Speed Controller Area Network (HS-CAN) are missing. |
Normal Operation and Fault Conditions
REFER to: Communications Network .
Possible Sources
- ABS module
- BCM
- PCM