Rear Oxygen Sensor: Removal

Disconnect the ground cable from battery.

Fig 1: Disconnecting Battery Ground Cable
Remove the clip fastening the harness and disconnect the rear oxygen (A/F) sensor connector.

Fig 2: Identifying Rear And Front Oxygen (A/F) Sensor Connector
Lift-up the vehicle.
Remove the under cover.
Apply spray-type lubricant to the threaded portion of rear oxygen sensor, and leave it for one minute or more.
Remove the rear oxygen sensor.

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

Fig 3: Identifying Front Oxygen (A/F) Sensor And Rear Oxygen Sensor