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 K900FACTORY OEM SERVICE PROCEDURE
4WD Control System DTCS
4WD CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| DTC P0602 | 41: ECU Internal Error - SW |
| DTC P0602 | 47: ECU Internal Error - HW |
| DTC P0602 | 49: Motor Driver Error |
| DTC P1780 | 16: Battery Voltage Low |
| DTC P1821 | 11: Motor Wire Short to Ground |
| DTC P1821 | 12: Motor Wire Short to Battery |
| DTC P1821 | 13: Motor Wire Open |
| DTC P1825 | 11: Pressure Sensor Supply Voltage Low |
| DTC P1825 | 12: Pressure Sensor Supply Voltage High |
| DTC P1827 | 11: Pressure Sensor Signal Voltage Low |
| DTC P1827 | 12: Pressure Sensor Signal Voltage High |
| DTC P1829 | 00: Clutch Torque Tolerance Limit Exceed |
| DTC P1830 | 00: Clutch Thermal Overstress |
| DTC P1836 | 00: Pressure Line Check Error |
| DTC P3114 | 00: Vehicle Information Option Not Detected Or Invalid |
| DTC P3119 | 00: Front/Rear Tire Difference Too Big or All Wheel Information Missing |
| DTC U0001 | 88: High Speed CAN Bus-Off |
| DTC U0100 | 87: Lost Communication with EMS |
| DTC U0101 | 87: Lost Communication With TCU |
| DTC U0122 | 87: Lost Communication With ESC |
| DTC U0126 | 87: Lost Communication With MDPS |
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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