Rear Oxygen Sensor

REAR OXYGEN SENSOR
A: REMOVAL
1. EXCEPT CALIFORNIA SPEC. VEHICLES

1) Disconnect battery ground cable.

2) Lift-up the vehicle.

3) Disconnect connector from rear oxygen sensor.
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 rear oxygen sensor, do not force rear oxygen sensor especially when exhaust pipe is cold, otherwise it will damage exhaust pipe.

2. CALIFORNIA SPEC. VEHICLES

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)

1) Before installing rear oxygen sensor, apply anti-seize compound only to threaded portion of rear oxygen sensor to make the next removal easier.

Anti-seize compound: SS-30 by JET LUBE

CAUTION: Never apply anti-seize compound to protector of rear oxygen sensor.

2) Install rear oxygen sensor.

Tightening torque: 21 ± 3 N.m (2.1 ± 0.3 kg-m, 15.2 ± 2.2 ft.lb)

3) Connect connector of rear oxygen sensor.
4) Lower the vehicle.

5) Connect battery ground cable.

2. CALIFORNIA SPEC. VEHICLES

1) Before installing rear oxygen sensor, apply anti- seize compound only to threaded portion of rear oxygen sensor to make the next removal easier.

Anti-seize compound: SS-30 by JET LUBE

CAUTION: Never apply anti-seize compound to protector of rear oxygen sensor.

2) Install rear oxygen sensor.

Tightening torque: 21 ± 3 N.m (2.1 ± 0.3 kg-m, 15.2 ± 2.2 ft-lb)

3) Lower the vehicle.
4) Connect connector to rear oxygen sensor.
5) Connect battery ground cable.