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 Subaru Outback VDC Sedan AWD F6-3.0LFACTORY OEM SERVICE PROCEDURE
Rear Oxygen Sensor
REMOVAL
1. Disconnect battery ground cable.
2. Disconnect connector from rear oxygen sensor.
3. Lift-up the vehicle.
4. Apply SUBARU CRC or its equivalent to threaded portion of rear oxygen sensor, and leave it for one minute or more.
SUBARU CRC (Part No.004301003)
5. Remove rear oxygen sensor.
CAUTION: When removing, do not force rear oxygen sensor in an unnatural way especially when exhaust pipe is cold, otherwise it will damage exhaust pipe.
INSTALLATION
1. Before installing rear oxygen sensor, apply anti- seize compound only to threaded portion of rear oxygen sensor to make the next removal easier.
CAUTION: Never apply anti-seize compound to protector of rear oxygen sensor.
Anti-seize compound: SS-30 by JET LUBE
2. Install rear oxygen sensor.
Tightening Torque: 21 Nm (2.1 kgf-m, 15.2 ft-lb)
3. Connect connector to rear oxygen sensor.
4. Lower the vehicle.
5. Connect battery ground cable.
1. Disconnect battery ground cable.
2. Disconnect connector from rear oxygen sensor.
3. Lift-up the vehicle.
4. Apply SUBARU CRC or its equivalent to threaded portion of rear oxygen sensor, and leave it for one minute or more.
SUBARU CRC (Part No.004301003)
5. Remove rear oxygen sensor.
CAUTION: When removing, do not force rear oxygen sensor in an unnatural way especially when exhaust pipe is cold, otherwise it will damage exhaust pipe.
INSTALLATION
1. Before installing rear oxygen sensor, apply anti- seize compound only to threaded portion of rear oxygen sensor to make the next removal easier.
CAUTION: Never apply anti-seize compound to protector of rear oxygen sensor.
Anti-seize compound: SS-30 by JET LUBE
2. Install rear oxygen sensor.
Tightening Torque: 21 Nm (2.1 kgf-m, 15.2 ft-lb)
3. Connect connector to rear oxygen sensor.
4. Lower the vehicle.
5. Connect battery ground cable.
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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