DTC U1280: Backup Control Unit Communication Bus Line Error (BUS-OFF) (Keyless Access Backup Control Unit)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2020 Honda Fit, 2019 Honda Fit, 2018 Honda Fit, 2017 Honda Fit, and 2016 Honda Fit. However, it is still accessible from the selected car via links, so may be relevant.
| DTC Description | DTC |
|---|---|
| U1280 Backup control unit communication bus line error (BUS-OFF) |
DTC (Backup Control Unit)
NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Refer to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks .
- Problem verification:
- 1. Turn the vehicle to the ON mode.
- 2. Clear the DTCs with the HDS.
- 3. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.
- 4. Wait for at least 6 seconds.
- 5. Check for DTCs with the HDS.
DTC Description DTC U1280 Backup control unit communication bus line error (BUS-OFF) Is DTC U1280 indicated?
YES
Go to MICU DTC U1280 troubleshooting .
NO
Intermittent failure, the system is OK at this time. Check for loose or poor connections.