Honda HR-V Owners & Service Manuals

Honda HR-V: DTC U1280 (Keyless Access Backup Control Unit) B-CAN Communication Bus Line Error (BUS-OFF)

Honda HR-V (2015-2021) Service Manual / Accessories & Equipment / Keyless Access Backup Control Unit - Diagnostics / DTC U1280 (Keyless Access Backup Control Unit) B-CAN Communication Bus Line Error (BUS-OFF)

Keyless Access Backup Control Unit - Diagnostics

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.

1. Problem verification.

  1. Clear the DTCs with the HDS.

Clear DTCs

  1. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.
  2. Wait for at least 6 seconds.
  3. Check for DTCs with the HDS.

Keyless Access Backup Control Unit - Diagnostics

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.

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