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.
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HOMESERVICE MANUALSHYUNDAI2014EQUUS SIGNATUREREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM DIAGNOSIS (2 OF 3)
2014 Hyundai Equus Signature
Engine Control System Diagnosis (2 Of 3)
2014 Hyundai Equus SignatureSECTION Engine Control System Diagnosis (2 Of 3)
- DTC Index
- 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)
RENDER: 1.0x
NO RELATED
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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.