DTC C1280: Engine Circuit Malfunction [08/2019 - ]: Procedure

1. Check if SFI system DTCs are output.

   Refer to DTC CHECK / CLEAR [09/2015 - ]

   Powertrain > Engine > Trouble Codes 

   Result

   Result	Proceed to
   SFI system DTCs are not output	A
   SFI system DTCs are output	B

Result: 

A 

REPLACE 4WD ECU ASSEMBLY. Refer to  COMPONENTS [09/2015 - ] 

Result: 

B 

GO TO SFI SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2019 - 07/2021]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [07/2021 - ]