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.
2002 Kia Rio Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Performance DTCS
ENGINE PERFORMANCE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| P0030 | Front Heater Oxygen Sensor Heater Circuit Malfunction |
| P0031 | Front Heater Oxygen Sensor Heater Circuit Low Input |
| P0032 | Front Heater Oxygen Sensor Heater Circuit High Input |
| P0036 | Rear Heated Oxygen Sensor Heated Circuit Malfunction |
| P0037 | Rear Heated Oxygen Sensor Heated Circuit Low Input |
| P0038 | Rear Heated Oxygen Sensor Heated Circuit High Input |
| P0100 | Mass Air Flow Sensor Circuit Malfunction |
| P0101 | Mass Air Flow Sensor Circuit Range/Performance Malfunction |
| P0102 | Mass Or Volume Airflow Circuit Low Input |
| P0103 | Mass Or Volume Airflow Circuit High Input |
| P0110 | Intake Air Temperature Sensor Circuit Malfunction |
| P0112 | Intake Air Temperature Sensor Circuit Low Input |
| P0113 | Intake Air Temperature Sensor Circuit High Input |
| P0115 | Engine Coolant Temperature Sensor Circuit Malfunction |
| P0116 | Engine Coolant Temperature Sensor Circuit Range/Performance Malfunction |
| P0117 | Engine Coolant Temperature Sensor Circuit Low Input |
| P0118 | Engine Coolant Temperature Sensor Circuit High Input |
| P0120 | Throttle Position Sensor Circuit Malfunction |
| P0121 | Throttle Position Sensor Circuit Range/Performance Malfunction |
| P0122 | Throttle Position Sensor Circuit Low Input |
| P0123 | Throttle Position Sensor Circuit High Input |
| P0125 | Insufficient Engine Coolant Temperature For Closed Loop Fuel Control |
| P0130 | Front Heated Oxygen Sensor Circuit Malfunction |
| P0131 | Front Heated Oxygen Sensor Low Input |
| P0132 | Front Heated Oxygen Sensor High Input |
| P0133 | Front Heated Oxygen Sensor Circuit Slow Response |
| P0134 | Front Heated Oxygen Sensor Circuit No Activity Detected |
| P0135 | Front Heated Oxygen Sensor Heater Circuit Malfunction |
| P0136 | Rear Heated Oxygen Sensor Circuit Malfunction |
| P0137 | Rear Heated Oxygen Sensor Circuit Low Input |
| P0138 | Rear Heated Oxygen Sensor Circuit High Input |
| P0139 | Rear Heated Oxygen Sensor Slow Response |
| P0140 | Rear Heated Oxygen Sensor Circuit No Activity Detected |
| P0141 | Rear Heated Oxygen Sensor Heater Circuit Malfunction |
| P0170 | Fuel Trim Malfunction |
| P0171 | Fuel System Too Lean |
| P0172 | Fuel System Too Rich |
| P0201 | Fuel Injector No. 1 Circuit Malfunction |
| P0202 | Fuel Injector No. 2 Circuit Malfunction |
| P0203 | Fuel Injector No. 3 Circuit Malfunction |
| P0204 | Fuel Injector No. 4 Circuit Malfunction |
| P0261 | Fuel Injector No. 1 Circuit Low Input |
| P0262 | Fuel Injector No. 1 Circuit High Input |
| P0264 | Fuel Injector No. 2 Circuit Low Input |
| P0265 | Fuel Injector No. 2 Circuit High Input |
| P0267 | Fuel Injector No. 3 Circuit Low Input |
| P0268 | Fuel Injector No. 3 Circuit High Input |
| P0270 | Fuel Injector No. 4 Circuit Low Input |
| P0271 | Fuel Injector No. 4 Circuit High Input |
| P0300 | Random Misfire Detected |
| P0301 | Cylinder No. 1 Misfire Detected |
| P0302 | Cylinder No. 2 Misfire Detected |
| P0303 | Cylinder No. 3 Misfire Detected |
| P0304 | Cylinder No. 4 Misfire Detected |
| P0325 | Knock Sensor Circuit Malfunction |
| P0335 | Crankshaft Position Sensor Circuit Malfunction |
| P0340 | Camshaft Position Sensor Circuit Malfunction |
| P0420 | Main Catalyst Efficiency Below Threshold |
| P0422 | Main Catalyst Efficiency Deterioration |
| P0440 | EVAP Emission Control System Malfunction |
| P0441 | EVAP Emission Control System Purge Control Solenoid Valve Stuck Open |
| P0442 | EVAP Emission Control System Small Leak Detected (1 mm) |
| P0443 | EVAP Emission Control System Purge Control Solenoid Valve Circuit Malfunction |
| P0444 | EVAP Emission Control System Purge Control Solenoid Valve Circuit Low Input |
| P0445 | EVAP Emission Control System Purge Control Solenoid Valve Circuit High Input |
| P0446 | EVAP Emission Control System Vent Circuit Malfunction |
| P0447 | EVAP Emission Control System Vent Circuit Open |
| P0448 | EVAP Emission Control System Vent Circuit Shorted |
| P0451 | EVAP Emission Control System Pressure Sensor Range/Performance Malfunction |
| P0452 | EVAP Emission Control System Pressure Sensor Low Input |
| P0453 | EVAP Emission Control System Pressure Sensor High Input |
| P0454 | EVAP Emission Control System Pressure Sensor Intermittent |
| P0455 | EVAP Emission Control System Large Leak Detected |
| P0456 | EVAP Emission Control System Small Leak Detected (0.5 mm) |
| P0501 | Vehicle Speed Sensor Circuit Malfunction |
| P0506 | Idle Control System RPM Lower Than Expected |
| P0507 | Idle Control System RPM Higher Than Expected |
| P0560 | System Voltage Malfunction |
| P0562 | System Voltage Low Input |
| P0563 | System Voltage High Input |
| P0601 | Engine Control Module Random Check Sum Error |
| P0605 | Engine Control Module ROM Error |
| P0650 | Malfunction Indicator Light Circuit Malfunction |
| P1166 | Lambda Bank Control Limit |
| P1505 | Idle Air Control Valve Opening Coil Signal Low Input |
| P1506 | Idle Air Control Valve Closing Coil Signal Low Input |
| P1506 | Idle Air Control Valve Opening Coil Signal High Input |
| P1508 | Idle Air Control Valve Closing Coil Signal High input |
| P1586 | Automatic Transaxle Or Manual Transaxle Encoding Malfunction |
| P1640 | Main Relay Malfunction |
| P1693 | Transaxle Control Module Request For Malfunction Indicator Light On |
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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