U Series — Network
3 U series network fault codes
| Code | Description | System | Severity | Brand |
|---|---|---|---|---|
| U0001 | High Speed CAN Communication Bus | Network & Communication | High | Generic |
| U0100 | Lost Communication with ECM/PCM A | Network & Communication | High | Generic |
| U0140 | Lost Communication with BCM (Body Control Module) | Network & Communication | Med | Generic |