Rear Oxygen Sensor: Removal

1. Disconnect the ground cable from battery.
   Fig 1: Disconnecting Ground Cable From Battery

   Courtesy of SUBARU OF AMERICA, INC.
2. Disconnect the connector of rear oxygen sensor.
   NOTE: Remove the harness clip from bracket.
   Fig 2: Disconnecting Connector Of Rear Oxygen Sensor

   Courtesy of SUBARU OF AMERICA, INC.
3. Lift up the vehicle.
4. Apply spray type lubricant to the threaded portion of rear oxygen sensor, and leave it for one minute or more.
5. Remove the rear oxygen sensor.

CAUTION: When removing the rear oxygen sensor, wait until the exhaust pipe cools, otherwise it will damage the exhaust pipe.

Fig 3: Removing Rear Oxygen Sensor

Courtesy of SUBARU OF AMERICA, INC.