Rear Oxygen Sensor: Removal

Disconnect the ground cable from battery.

Fig 1: Disconnecting Ground Cable From Battery
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Lift-up the vehicle.
Disconnect the connector from the rear oxygen sensor.

Fig 2: Identifying Connector For Disconnection
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Apply SUBARU CRC or its equivalent to the threaded portion of rear oxygen sensor, and leave it for one minute or more.
SUBARU CRC (Part No. 004301003)
Remove the rear oxygen sensor.
CAUTION: When removing the oxygen sensor, wait until exhaust pipe cools, otherwise it will damage exhaust pipe.

Fig 3: Precaution While Removing Oxygen Sensor

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