Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2020 Kia Optima Plug-In Hybrid EXFACTORY OEM SERVICE PROCEDURE
Engine Control System Diagnosis (6 Of 6) (PHEV)
- DTC Index
- DTC P2422-00: EVAP System Vent Valve Stuck Closed
- DTC P2422-00: Evaporative Emission System Vent Valve Stuck Closed
- DTC P24B9-00: EVAP System Leak Detection Pump Pressure Sensor Circuit Range/Performance
- DTC P24BA-00: EVAP System Leak Detection Pump Pressure Sensor Circuit Low
- DTC P24BB-00: EVAP System Leak Detection Pump Pressure Sensor Circuit High
- DTC P24BC-00: EVAP System Leak Detection Pump Pressure Sensor Circuit Intermittent
- DTC P24BD-00: EVAP System Leak Detection Pump Vacuum Switching Valve Control Circuit/Open
- DTC P24BE-00: EVAP System Leak Detection Pump Vacuum Switching Valve Control Circuit Low
- DTC P24BF-00: EVAP System Leak Detection Pump Vacuum Switching Valve Control Circuit High
- DTC P24C0-00: EVAP System Leak Detection Pump Vacuum Switching Valve Stuck On
- DTC P2540-00: Low Pressure Fuel System Sensor Circuit Range/Performance
- DTC P2541-00: Low Pressure Fuel System Sensor Circuit Low
- DTC P2542-00: Low Pressure Fuel System Sensor Circuit High
- DTC P2600-00: Coolant Pump 'A' Control Circuit/Open
- DTC P2601-00: Coolant Pump 'A' Control Circuit Range/Perfromance
- DTC P2610-00: ECM/PCM Internal Engine Off Timer Performance
- DTC P261F-00: Coolant Pump 'A' Control Circuit Stuck On
- DTC P2626-00: O2 Sensor Pumping Current Trim Circuit/Open (Bank 1 Sensor 1)
- DTC P26D0-00: Engine Coolant Pump Control Module System Voltage Low
- DTC P26D1-00: Engine Coolant Pump Control Module System Voltage High
- DTC P3190-00: Poor Engine Power
- DTC U0001-00: High Speed CAN Communication Bus Off (C-CAN)
- DTC U0101-00: Lost Communication With TCM (C-CAN)
- DTC U0109-00: Lost Communication With Fuel Pump Control Module
- DTC U0110-00: Lost Communication With Drive Motor Control Module 'A' (C-CAN)
- DTC U0111-00: Lost Communication With Battery Energy Control Module 'A' (C-CAN)
- DTC U0293-00: Lost Communication With Hybrid Powertrain Control Module (C-CAN)
- DTC U0456-00: Invalid Data Received From Coolant Temperature Control Module
- DTC U1001-00: High Speed CAN Communication Bus (H-CAN)
- DTC U1003-00: Lost Communication With TCM (H-CAN)
- DTC U1004-00: Lost Communication With Hybrid Powertrain Control Module (H-CAN)
- DTC U1008-00: Lost Communication With Radiator Shutter (Active Air Flap) (C-CAN)
- DTC U1111-00: Lin Message Timeout With EBS
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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