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.
2004 Mitsubishi Lancer LSFACTORY OEM SERVICE PROCEDURE
Engine Performance Lancer 2.0L DTCS
ENGINE PERFORMANCE LANCER 2.0L DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| P0101 | Volume Airflow Circuit Range/Performance Problem |
| P0102 | Volume Airflow Circuit Low Input |
| P0106 | Manifold Absolute Pressure Circuit Range/Performance Problem |
| P0107 | Manifold Absolute Pressure Circuit Low Input |
| P0108 | Manifold Absolute Pressure Circuit High Input |
| P0111 | Intake Air Temperature Circuit Range/Performance Problem |
| P0112 | Intake air temperature Circuit Low Input |
| P0113 | Intake air temperature Circuit High Input |
| P0116 | Engine Coolant Temperature Circuit Range/Performance Problem |
| P0117 | Engine Coolant Temperature Circuit Low Input |
| P0118 | Engine Coolant Temperature Circuit High Input |
| P0121 | Throttle Position Sensor Circuit Range/Performance Problem |
| P0122 | Throttle Position Sensor Circuit Low Input |
| P0123 | Throttle Position Sensor Circuit High Input |
| P0125 | Insufficient Coolant Temperature for Closed Loop Fuel Control |
| P0128 | Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) |
| P0130 | Heated Oxygen Sensor Circuit (Sensor 1) |
| P0131 | Heated Oxygen Sensor Circuit Low Voltage (sensor 1) |
| P0132 | Heated Oxygen Sensor Circuit High Voltage (sensor 1) |
| P0133 | Heated Oxygen Sensor Circuit Slow Response (Sensor 1) |
| P0134 | Heated Oxygen Sensor Circuit No Activity Detected (sensor 1) Circuit |
| P0135 | Oxygen Sensor Heater Circuit (Sensor 1) |
| P0136 | Heated Oxygen Sensor Circuit High Voltage (sensor 2) |
| P0137 | Heated Oxygen Sensor Circuit Low Voltage (sensor 2) |
| P0138 | Heated Oxygen Sensor Circuit High Voltage (sensor 2) |
| P0139 | Heated Oxygen Sensor Circuit Slow Response (sensor 2) |
| P0141 | Heated Oxygen Sensor Heater Circuit (sensor 2) |
| P0171 | System too Lean |
| P0172 | System too Rich |
| P0181 | Fuel Tank Temperature Sensor Circuit Range/Performance |
| P0182 | Fuel Tank Temperature Sensor Circuit Low Input |
| P0183 | Fuel Tank Temperature Sensor Circuit High Input |
| P0201 | Injector Circuit - Cylinder 1 |
| P0202 | Injector Circuit - Cylinder 2 |
| P0203 | Injector Circuit - Cylinder 3 |
| P0204 | Injector Circuit - Cylinder 4 |
| P0300 | Random/Multiple Cylinder Misfire Detected |
| P0301 | Misfire Detected - Cylinder 1 |
| P0302 | Misfire Detected - Cylinder 2 |
| P0303 | Misfire Detected - Cylinder 3 |
| P0304 | Misfire Detected - Cylinder 4 |
| P0325 | Knock Sensor Circuit |
| P0335 | Crankshaft Position Sensor Circuit |
| P0340 | Camshaft Position Sensor Circuit |
| P0401 | Exhaust Gas Recirculation Flow Insufficient Detected |
| P0403 | Exhaust Gas Recirculation Control circuit |
| P0421 | Warm Up Catalyst Efficiency Below Threshold |
| P0441 | Evaporative Emission Control System Incorrect Purge Flow |
| P0442 | Evaporative Emission Control System Leak Detected (Small Leak) |
| P0443 | Evaporative Emission Control System Purge Control Valve Circuit |
| P0446 | Evaporative Emission Control System Vent Control Circuit |
| P0451 | Evaporative Emission Control System Pressure Sensor Range/Performance |
| P0452 | Evaporative Emission Control System Pressure Sensor Low Input |
| P0453 | Evaporative Emission Control System Pressure Sensor High Input |
| P0455 | Evaporative Emission Control System Leak Detected (Gross Leak) |
| P0456 | Evaporative Emission Control System Leak Detected (Very Small Leak) |
| P0461 | Fuel Level Sensor Circuit Range/Performance |
| P0500 | Vehicle Speed Sensor < M/T > |
| P0506 | Idle Control System RPM Lower Than Expected |
| P0507 | Idle Control System RPM Higher Than Expected |
| P0551 | Power Steering Pressure Sensor Circuit Range/Performance |
| P0554 | Power Steering Pressure Sensor Circuit Intermittent |
| P0622 | Generator FR Terminal Circuit Malfunction |
| P1603 | Battery Backup Line Malfunction |
| P2227 | Barometric Pressure Circuit Range/Performance Problem |
| P2228 | Barometric Pressure Circuit Low Input |
| P2229 | Barometric Pressure Circuit High Input |
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.