1. Set the vehicle on a lift.
2. Disconnect the ground cable from the battery.
3. Lift up the vehicle.
4. Disconnect the connector from the rear oxygen sensor.
5. Apply spray-type lubricant or equivalent to the threaded portion of the rear oxygen sensor, and leave it for one minute or more.
6. Remove the rear oxygen sensor.
CAUTION:
When removing the rear oxygen sensor, wait until exhaust pipe cools, otherwise it will damage the exhaust pipe.
