DTC U1280 (HVAC Control Unit)

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

DTCs (AC)

1. Problem verification

   -1. Clear the DTCs with the HDS.

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

   -3. Do the Self-Diagnostic Function with the HDS or the HVAC control unit .

   -4. Wait for at least 6 seconds.

   -5. Check for DTCs.

   DTC Description	DTC
   U1280 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.