Except California

REMOVAL





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, 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.

Anti-seize compound: SS-3O by JET LUBE

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





2. Install rear oxygen sensor.

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





3. Connect connector to rear oxygen sensor.
4. Lower the vehicle.





5. Connect battery ground cable.