REAR OXYGEN SENSOR
Fuel Injection (Fuel Systems)
16. Rear Oxygen Sensor
A: REMOVALS185657A18
1) Disconnect battery ground cable.
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6) Remove rear oxygen sensor.
CAUTION:
When removing the oxygen sensor, wait until exhaust pipe cools, otherwise it will damage exhaust pipe.
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2)   Lift-up the vehicle.
3)   Disconnect connector from rear oxygen sensor.
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4) Vertically draw out clip (A) from crossmember (B).
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5) 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)
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REAR OXYGEN SENSOR
Fuel Injection (Fuel Systems)
B: INSTALLATION
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6) Connect battery ground cable.
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)
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3) Connect connector to rear oxygen sensor.
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4) Secure clip (A) on the crossmember.
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5) Lower the vehicle.
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