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.
2014 Hyundai Equus SignatureFACTORY OEM SERVICE PROCEDURE
DTC Index
DTC INDEX
| DTC | Description |
|---|---|
| DTC P0201 | Injector Circuit/Open-Cylinder 1 |
| DTC P0202 | Injector Circuit/Open-Cylinder 2 |
| DTC P0203 | Injector Circuit/Open-Cylinder 3 |
| DTC P0204 | Injector Circuit/Open-Cylinder 4 |
| DTC P0205 | Injector Circuit/Open-Cylinder 5 |
| DTC P0206 | Injector Circuit/Open-Cylinder 6 |
| DTC P0207 | Injector Circuit/Open - Cylinder 7 |
| DTC P0208 | Injector Circuit/Open - Cylinder 8 |
| DTC P020A | Cylinder 1 Injector Timing (Injector Input Line Circuit Error) |
| DTC P020B | Cylinder 2 Injector Timing (Injector Input Line Circuit Error) |
| DTC P020C | Cylinder 3 Injector Timing (Injector Input Line Circuit Error) |
| DTC P020D | Cylinder 4 Injector Timing (Injector Input Line Circuit Error) |
| DTC P020E | Cylinder 5 Injector Timing (Injector Input Line Circuit Error) |
| DTC P020F | Cylinder 6 Injector Timing (Injector Input Line Circuit Error) |
| DTC P0219 | Engine Overspeed Condition |
| DTC P021A | Cylinder 7 Injector Timing (Injector Input Line Circuit Error) |
| DTC P021B | Cylinder 8 Injector Timing (Injector Input Line Circuit Error) |
| DTC P0221 | Throttle Position Sensor 2 Signal Circuit Range/Performance |
| DTC P0222 | Throttle Position Sensor 2 Signal Circuit Low Input |
| DTC P0223 | Throttle Position Sensor 2 Signal Circuit High Input |
| DTC P0230 | Fuel Pump Primary Circuit |
| DTC P0253 | Injection Pump Fuel Metering Control 'A' Low (Cam/Rotor/Injector) |
| DTC P0254 | Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector) |
| DTC P0258 | Injection Pump Fuel Metering Control 'B' Low (Cam/Rotor/Injector) |
| DTC P0259 | Injection Pump Fuel Metering Control 'B' High (Cam/Rotor/Injector) |
| DTC P0261 | Cylinder 1 Injector Circuit Low |
| DTC P0262 | Cylinder 1 Injector Circuit High |
| DTC P0263 | Cylinder 1 Contribution/Balance |
| DTC P0264 | Cylinder 2 Injector Circuit Low |
| DTC P0265 | Cylinder 2 Injector Circuit High |
| DTC P0266 | Cylinder 2 Contribution/Balance |
| DTC P0267 | Cylinder 3 Injector Circuit Low |
| DTC P0268 | Cylinder 3 Injector Circuit High |
| DTC P0269 | Cylinder 3 Contribution/Balance |
| DTC P0270 | Cylinder 4 Injector Circuit Low |
| DTC P0271 | Cylinder 4 Injector Circuit High |
| DTC P0272 | Cylinder 4 Contribution/Balance |
| DTC P0273 | Cylinder 5 Injector Circuit Low |
| DTC P0274 | Cylinder 5 Injector Circuit High |
| DTC P0275 | Cylinder 5 Contribution/Balance |
| DTC P0276 | Cylinder 6 Injector Circuit Low |
| DTC P0277 | Cylinder 6 Injector Circuit High |
| DTC P0278 | Cylinder 6 Contribution/Balance |
| DTC P0279 | Cylinder 7 Injector Circuit Low |
| DTC P0280 | Cylinder 7 Injector Circuit High |
| DTC P0281 | Cylinder 7 Contribution/Balance |
| DTC P0282 | Cylinder 8 Injector Circuit Low |
| DTC P0283 | Cylinder 8 Injector Circuit High |
| DTC P0284 | Cylinder 8 Contribution/Balance |
| DTC P0300 | Random/Multiple Cylinder Misfire Detected |
| DTC P0301 | Cylinder 1-Misfire detected |
| DTC P0302 | Cylinder 2-Misfire detected |
| DTC P0303 | Cylinder 3-Misfire detected |
| DTC P0304 | Cylinder 4-Misfire detected |
| DTC P0305 | Cylinder 5-Misfire detected |
| DTC P0306 | Cylinder 6-Misfire detected |
| DTC P0307 | Cylinder 7 Misfire Detected |
| DTC P0308 | Cylinder 8 Misfire Detected |
| DTC P0326 | Knock Sensor 1 Circuit Range/Performance (Bank 1) |
| DTC P032B | Knock Sensor 3 Circuit Range/Performance |
| DTC P0331 | Knock Sensor 2 Circuit Range/Performance (Bank 2) |
| DTC P0335 | Crankshaft Position Sensor 'A' Circuit |
| DTC P0336 | Crankshaft Position Sensor 'A' Circuit Range/Performance |
| DTC P033B | Knock Sensor 4 Circuit Range/Performance |
| DTC P0340 | Camshaft Position Sensor 'A' Circuit (Single Sensor) |
| DTC P0341 | Camshaft Position Sensor A Circuit Range/Performance (Bank 1) |
| DTC P0345 | Camshaft Position Sensor 'A' Circuit (Bank 2) |
| DTC P0346 | Camshaft Position Sensor A Circuit Range/Performance (Bank 2) |
| DTC P0365 | Camshaft Position Sensor B Circuit Malfunction (Bank 1) |
| DTC P0366 | Camshaft Position Sensor 'B' Circuit Range/Performance (Bank 1) |
| DTC P0390 | Camshaft Position Sensor 'B' Circuit (Bank 2) |
| DTC P0391 | Camshaft Position Sensor 'B' Circuit Range/Performance (Bank 2) |
| DTC P0420 | Catalyst System Efficiency below Threshold (Bank 1) |
| DTC P0430 | Catalyst System Efficiency Below Threshold (Bank 2) |
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.