Lost Communication with ABS
| Code | U0121 |
| Description | Lost Communication with ABS |
| Possible Causes | Communication has been lost with the anti-lock brake module. |
| System | Network - Communication |
Lost Communication with ABS. This diagnostic trouble code (DTC) is stored when the vehicle's onboard computer detects an issue with the network - communication.
U = Network code
0 = Generic (SAE standard)