DTC U1280 (80): Communication Bus Line Error (BUS-OFF)

DTC (AC)

• 1. Problem verification:

  1. Clear the DTCs with the HDS.

  2. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.

  3. Do the Self-Diagnostic Function with the HDS or the climate control unit - Refer to: How to Troubleshoot the Body ElectricalHow to Troubleshoot the Climate Control System .

  4. Wait for at least 6 seconds.

  5. Check for DTCs.

  DTC Description	DTC
  U1280 Communication bus line error (BUS-OFF)

  Is DTC U1280 or 80 indicated?

  YES 

  Go to the MICU DTC U1280 troubleshooting .

  NO 

  Intermittent failure, the system is OK at this time.