DTC C1259: HV Control System Regenerative Malfunction; DTC C1310: HV System Malfunction [10/2020 - 10/2023]: Procedure

1. Check if a hybrid control system DTC is output.

   Refer to DTC CHECK / CLEAR [10/2017 - 10/2023]

   Powertrain > Hybrid Control > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output.	A
   DTCs are output.	B

Result: 

A 

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to  REMOVAL [10/2020 - 11/2021]  , or refer to  REMOVAL [11/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023] 

Result: 

B 

INSPECT HYBRID CONTROL SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2017 - 10/2023]