DTC C1259: HV Control System Regenerative Malfunction; DTC C1310: HV System Malfunction [11/2018 - 02/2019]: Procedure

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

   Refer to DTC CHECK / CLEAR [11/2018 - 08/2020]

   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 [11/2018 - 02/2019] 

Result: 

B 

INSPECT HYBRID CONTROL SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - 08/2020]