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 (4 Of 6) (PHEV)
- DTC Index
- DTC P0489-00: Exhaust Gas Recirculation Control Circuit Low
- DTC P0490-00: Exhaust Gas Recirculation Control Circuit High
- DTC P049D-00: EGR 'A' Control Position Exceeded Learning Limit
- DTC P04ED-00: EVAP System Large Leak Detected - Fresh Air Side
- DTC P04EF-00: EVAP System Very Small Leak Detected - Fresh Air Side
- DTC P0504-00: Brake Switch 'A'/'B' Correlation
- DTC P0506-00: Idle Air Control System-RPM Lower Than Expected
- DTC P0507-00: Idle Air Control System-RPM Higher Than Expected
- DTC P050A-00: Cold Start Idle Air Control System Performance
- DTC P050B-00: Cold Start Ignition Timing Performance
- DTC P0532-00: A/C Refrigerant Pressure Sensor 'A' Circuit Low Input
- DTC P0533-00: A/C Refrigerant Pressure Sensor 'A' Circuit High Input
- DTC P0560-00: System Voltage
- DTC P0562-00: System Voltage Low
- DTC P0563-00: System Voltage High
- DTC P0605-00: Internal Control Module Read Only Memory(ROM) Error
- DTC P0606-00: ECM/PCM Processor
- DTC P0607-00: Control Module Performance
- DTC P061A-00: Internal Control Module Torque Performance
- DTC P061B-00: Internal Control Module Torque Calculation Performance
- DTC P061C-00: Internal Control Module Engine RPM Performance
- DTC P062B-00: Internal Control Module Fuel Injector Control Performance
- DTC P0630-00: VIN Not Programmed Or Incompatible-ECM/PCM
- DTC P0638-00: Throttle Actuator Control Range/Performance
- DTC P0642-00: Sensor Reference Voltage 'A' Circuit Low
- DTC P0643-00: Sensor Reference Voltage 'A' Circuit High
- DTC P064A-00: Fuel Pump Control Module
- DTC P064D-00: Internal Control Module O2 Sensor Processor Performance Bank 1
- DTC P0652-00: Sensor Reference Voltage 'B' Circuit Low
- DTC P0653-00: Sensor Reference Voltage 'B' Circuit High
- DTC P0698-00: Sensor Reference Voltage 'C' Circuit Low
- DTC P0699-00: Sensor Reference Voltage 'C' Circuit High
- DTC P06A4-00: Sensor Reference Voltage 'D' Circuit Low
- DTC P06A5-00: Sensor Reference Voltage 'D' Circuit High
- DTC P1160-00: Duration Of The Key Off Is Too Shot
- DTC P1230-00: Low Pressure Fuel Pump Malfunction
- DTC P1233-00: Low Pressure Fuel System - High Deviation Between Target And Current Pressure
Factory Service Tools
Use the Manual With the Right Hardware
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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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