Front Oxygen ( A/F) Sensor (U5/Low Emissions)

REMOVAL

LH SIDE




1. Disconnect battery ground cable.




2. Disconnect connectors from bracket and front oxygen (A/F)sensor.
3. Lift-up the vehicle.
4. Remove undercover.




5. Remove front oxygen (A/F) sensor harness from bracket.
6. Apply SUBARU CRC or its equivalent to threaded portion of front oxygen (A/F) sensor, and leave it for one minute or more.

SUBARU CRC (Part No. 004301003)




7. Remove front oxygen (A/F) sensor.

CAUTION: When removing the oxygen (A/F) sensor, wait until exhaust pipe cools, otherwise it will damage exhaust pipe.

RH SIDE




1. Disconnect battery ground cable.




2. Disconnect connectors from bracket and front oxygen (A/F) sensor.
3. Lift-up the vehicle.
4. Remove undercover.




5. Remove front oxygen (A/F) sensor harness from bracket.
6. Apply SUBARU CRC or its equivalent to threaded portion of front oxygen (A/F) sensor, and leave it for one minute or more.

SUBARU CRC (Part No. 004301003)




7. Remove front oxygen (A/F) sensor.

CAUTION: When removing the oxygen (A/F) sensor, wait until exhaust pipe cools, otherwise it will damage exhaust pipe.

INSTALLATION

LH SIDE

1. Before installing front oxygen (A/F) sensor, apply anti-seize compound only to threaded portion of front oxygen (A/F) sensor to make the next removal easier.

Anti-seize compound: SS-30 by JET LUBE

CAUTION: Never apply anti-seize compound to protector of front oxygen (A/F) sensor.




2. Install front oxygen (A/F) sensor.




3. Install front oxygen (A/F) sensor harness to bracket.
4. Install undercover.
5. Lower the vehicle.




6. Connect connector of front oxygen (A/F) sensor, and install connector to bracket.




7. Connect battery ground cable.

RH SIDE

1. Before installing front oxygen (A/F) sensor, apply anti-seize compound only to threaded portion of front oxygen (A/F) sensor to make the next removal easier.

Anti-seize compound: SS-30 by JET LUBE

CAUTION: Never apply anti-seize compound to protector of front oxygen (A/F) sensor.




2. Install front oxygen (A/F) sensor.




3. Install front oxygen (A/F) sensor harness to bracket.
4. Install undercover.
5. Lower the vehicle.




6. Connect connector of front oxygen (A/F) sensor.




7. Connect battery ground cable.