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.
1997 Mitsubishi Montero LSFACTORY OEM SERVICE PROCEDURE
Engine Controls - Tests W/Codes
- Introduction
- Self-Diagnostic System
- Diagnostic Trouble Codes (DTCS)
- Terminal Identification
- OBD-II Drive Cycle
- Diagnostic Tests
- Circuit Tests
- DTC P0100: Volume Airflow (VAF) Sensor Circuit Failure
- DTC P0105: Barometric (BARO) Pressure Sensor Circuit Failure
- DTC P0110: Intake Air Temperature (IAT) Sensor Circuit Failure
- DTC P0115: Engine Coolant Temperature (ECT) Sensor Failure
- DTC P0120: Throttle Position (TP) Sensor Circuit Failure
- DTC P0125: Excessive Time To Enter Closed Loop Fuel Control
- DTC P0130, DTC P0135, DTC P0150 & DTC P0155: Front Heated Oxygen Sensor (Ho2S) Circuit Failure
- DTC P0136 & DTC P0141, DTC P0156 & DTC P0161: Rear Heated Oxygen Sensor (Ho2S) Circuit Failure
- DTC P0170 & DTC P0173: Fuel Trim Failure
- DTC P0201-P0206: Fuel Injector Circuit Failure
- DTC P0300, DTC P0301, DTC P0302, DTC P0303, DTC P0304, DTC P0305 & DTC P0306: Cylinder Misfire Detected
- DTC P0335: Crankshaft Position (CKP) Sensor Circuit Failure
- DTC P0340: Camshaft Position (CMP) Sensor Circuit Failure
- DTC P0400 & DTC P0403: Exhaust Gas RECIRCULATION (EGR) Valve System Failure
- DTC P0420, DTC P0421 & DTC P0431: Catalyst Efficiency Below Threshold
- DTC P0440, DTC P0442, P0443, P0446 & P0450: Evaporative (EVAP) Emission Control System Failure
- DTC P0500: Vehicle Speed Sensor (VSS) Circuit Failure
- DTC P0505: Idle Control System Failure
- DTC P0510: Closed Throttle Position (TP) Switch Failure
- DTC P0551: Power Steering Pressure (PSP) Sensor Circuit Performance
- DTC P0705: Transmission Range Sensor Circuit Failure
- DTC P1400: Manifold Differential Pressure (MDP) Sensor Circuit Failure
- DTC P1600: Serial Communication Link Malfunction
- DTC P1715: Pulse Generator Failure
- DTC P1750: Solenoid Failure
- DTC P1791: Engine Coolant Temperature Level Input To TCM
- Summary
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.