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 MANUALSMITSUBISHI2005LANCER L4-2.4L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSOXYGEN SENSORSERVICE AND REPAIRCALIFORNIA VEHICLES
2005 Mitsubishi Lancer L4-2.4L SOHC
California Vehicles
2005 Mitsubishi Lancer L4-2.4L SOHCSECTION California Vehicles
REMOVAL AND INSTALLATION
Refer to the removal and installation of catalytic converter because it is integrated in the exhaust manifold and the front exhaust pipe.
- Exhaust manifold side (the vehicles with 2.0L engine) : Refer to Exhaust Manifold.
- Front exhaust pipe side : Refer to Exhaust Pipe and Main Muffler.
REMOVAL AND INSTALLATION
Required Special Tool:
- MD998770: Oxygen Sensor Wrench
REMOVAL SERVICE POINT
<> HEATED OXYGEN SENSOR (FRONT)
REMOVAL
Use special tool MD998770 to remove the oxygen sensor.
INSTALLATION SERVICE POINT
<> HEATED OXYGEN SENSOR (FRONT)
INSTALLATION
Use special tool MD998770 to installation the oxygen sensor.
Refer to the removal and installation of catalytic converter because it is integrated in the exhaust manifold and the front exhaust pipe.
- Exhaust manifold side (the vehicles with 2.0L engine) : Refer to Exhaust Manifold.
- Front exhaust pipe side : Refer to Exhaust Pipe and Main Muffler.
REMOVAL AND INSTALLATION
Required Special Tool:
- MD998770: Oxygen Sensor Wrench
REMOVAL SERVICE POINT
<> HEATED OXYGEN SENSOR (FRONT)
REMOVAL
Use special tool MD998770 to remove the oxygen sensor.
INSTALLATION SERVICE POINT
<> HEATED OXYGEN SENSOR (FRONT)
INSTALLATION
Use special tool MD998770 to installation the oxygen sensor.
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.