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.
2021 Kia K5 GT-Line, FWDFACTORY OEM SERVICE PROCEDURE
AWD Control System DTCS
AWD CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| DTC P0602 | 41: ECU Internal Error - SW |
| DTC P1756 | 00: ECU Internal Error - HW |
| DTC P1781 | 00: 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 P1940 | 00: ECU Internal Error - Motor |
| 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 Communication Bus |
| DTC U0100 | 87: Lost Communication with ECM/PCM 'A' |
| DTC U0101 | 87: Lost Communication With TCM |
| DTC U0122 | 87: Lost Communication With Vehicle Dynamics Control Module |
| DTC U0126 | 87: Lost Communication With Steering Angle Sensor Module |
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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