Rear Oxygen Sensor: Removal

Disconnect the ground cable from battery.
Lift-up the vehicle.
Disconnect the connector from the rear oxygen sensor.

Fig 1: Locating Connector For Rear Oxygen Sensor
Remove the clip by pulling out from the upper side of crossmember.

Fig 2: Locating Clip
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 sensor, wait until exhaust pipe cools; otherwise, it will damage exhaust pipe.

Fig 3: Locating Rear Oxygen Sensor