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 Niro EV EXFACTORY OEM SERVICE PROCEDURE
Vehicle Control System DTCS
VEHICLE CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| DTC P0504 | Brake Switch "A"/"B" Correlation |
| DTC P0562 | System Voltage Low |
| DTC P0563 | System Voltage High |
| DTC P062F | Internal Control Module EEPROM Error |
| DTC P0630 | VIN Not Programmed or Incompatible - ECM/PCM |
| DTC P0642 | Sensor Reference Voltage 'A' Circuit Low |
| DTC P0643 | Sensor Reference Voltage 'A' Circuit High |
| DTC P0698 | Sensor Reference Voltage 'C' Circuit Low |
| DTC P0699 | Sensor Reference Voltage 'C' Circuit High |
| DTC P0A94 | DC/DC Converter Performance |
| DTC P0C3A | DC/DC Converter Temperature Sensor 'A' Low |
| DTC P0C3B | DC/DC Converter Temperature Sensor 'A' High |
| DTC P1060 | SBW System Error |
| DTC P1061 | SBW Actuator Power Relay Error |
| DTC P1062 | SBW Actuator Error |
| DTC P1065 | SBW Parking Learning Uncompleted |
| DTC P1066 | SBW Control Unit Error |
| DTC P1A78 | Check IG3 Relay or Back Up Lamp Circuit |
| DTC P1A88 | LDC Cooling System Fault |
| DTC P1A89 | LDC Current Sensor Fault |
| DTC P1A8A | DC/DC Converter Temperature Sensor Circuit Range/Performance Fail |
| DTC P1A8C | DC/DC Converter Input Current Over Fail |
| DTC P1A8D | DC/DC Converter Voltage Path Fault |
| DTC P1A8F | DC/DC Converter PWM Output Fail |
| DTC P2122 | Throttle/Pedal Position Sensor/Switch 'D' Circuit Low Input |
| DTC P2123 | Throttle/Pedal Position Sensor/Switch 'D' Circuit High Input |
| DTC P2127 | Throttle/Pedal Position Sensor/Switch 'E' Circuit Low Input |
| DTC P2128 | Throttle/Pedal Position Sensor/Switch 'E' Circuit High Input |
| DTC P2138 | Throttle/Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation |
| DTC U0001 | High Speed CAN Communication Bus |
| DTC U0103 | Lost Communication With Gear Shift Control Module 'A' |
| DTC U0110 | Lost Communication With Drive Motor Control Module |
| DTC U0111 | Lost Communication With Battery Energy Control Module 'A' |
| DTC U0129 | Lost Communication With Brake System Control Module |
| DTC U0146 | Lost Communication with GateWay 'A' |
| DTC U0164 | Lost Communication with HVAC Control Module |
| DTC U04B1 | Invalid Data Received From Battery Monitor Module |
| DTC U1001 | High Speed CAN Communication Bus |
| DTC U1005 | Lost Communication With MCU |
| DTC U1017 | SBW CAN Communication Error |
| DTC U1112 | LIN Communication Error |
| DTC U1310 | Lost Communication with On-board Charger |
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.