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.
2017 Kia Niro EXFACTORY OEM SERVICE PROCEDURE
HEV Control System DTCS
HEV CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE IDENTIFICATION
| DTC | Description |
|---|---|
| DTC P0504 | Brake Switch 'A'/'B' Correlation |
| DTC P0A0F | Engine Failed To Start |
| DTC P0A7D | Hybrid/EV Battery Pack State Of Charge Low |
| 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 P1610 | Non-Immobilizer - EMS Connected To An Immobilizer |
| DTC P1679 | Immobilizer - EMS Data Fail (Data Frame, CS, Message Error) |
| DTC P1696 | Immobilizer - Authentication Fail |
| DTC P1744 | Transmission Engine Clutch System Performance |
| DTC P1790 | Variant Coding Error |
| DTC P17E0 | Engine Clutch System Refill Failed |
| DTC P17E1 | Engine Clutch Actuator Angular Sensor Error |
| DTC P17E2 | Engine Clutch Actuator Electric H/W Fault |
| DTC P17E3 | Engine Clutch Actuator Electric Motor Short To Ground/VB |
| DTC P17E4 | Engine Clutch Actuator H/W Over-Temp |
| DTC P17E5 | Engine Clutch Actuator Battery Error |
| DTC P17E6 | Engine Clutch Actuator Pressure Sensor Error |
| DTC P17E7 | Engine Clutch Actuator Travel Sensor Error |
| DTC P17E8 | Engine Clutch System Abnormal |
| DTC P17E9 | Engine Clutch Actuator Motor Overload |
| DTC P17EA | Engine Clutch Actuator Block Detection Error |
| DTC P17EB | Engine Clutch System Leakage Fail |
| DTC P17EC | Engine Clutch System End Of Life Fault |
| DTC P17ED | Engine Clutch System EOL Fault |
| DTC P17EE | Engine Clutch System Functional Safety Fault |
| DTC P1A77 | Check Generator Belt |
| 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 P25A2 | Brake System Control Module Requested MIL Illumination |
| DTC U0001 | High Speed CAN Communication Bus (P-CAN) |
| DTC U0100 | Lost Communication With ECM/PCM 'A' (P-CAN) |
| DTC U0101 | Lost Communication With TCM (P-CAN) |
| DTC U0110 | Lost Communication With Drive Motor Control Module (P-CAN) |
| DTC U0111 | Lost Communication With Battery Energy Control Module 'A' (P-CAN) |
| DTC U0129 | Lost Communication With Brake System Control Module (P-CAN) |
| DTC U0146 | Lost Communication With Gateway 'A' |
| DTC U0164 | Lost Communication With HVAC Control Module |
| DTC U1001 | High Speed CAN Communication Bus (H-CAN) |
| DTC U1002 | Lost Communication With ECM (H-CAN) |
| DTC U1003 | Lost Communication With TCM (H-CAN) |
| DTC U1005 | Lost Communication With Drive Motor Control Module (H-CAN) |
| DTC U1006 | Lost Communication With Battery Energy Control Module 'A' (H-CAN) |
| DTC U1010 | CAN Time-Out With HCU And HCA On Local CAN |
| DTC U1011 | Lost Communication With HCA By HCU (L-CAN) |
| DTC U1012 | CAN Bus OFF (L-CAN) |
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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