1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle.
2. Disconnect the bank 2, oxygen sensor 2 (4), electrical connector from the engine wiring harness connector.

Caution: Refer to Heated Oxygen and Oxygen Sensor Caution in the Preface section.

Caution: Refer to Excessive Force and Oxygen Sensor Caution in the Preface section.

3. Remove the bank 2, oxygen sensor 2 (4), from the catalytic converter.

Note: Use special anti-seize compound on the heated oxygen sensor threads. The compound consists of graphite suspended in fluid and glass beads. The graphite burns away, but the glass beads remain, making the sensor easier to remove. New or service sensors already have the compound applied to the threads. If you remove an oxygen sensor and if for any reason you must reinstall the same oxygen sensor, apply the anti-seize compound to the threads before reinstallation.

1. Coat the threads of the oxygen sensor 2 with the anti-seize compound P/N 5613695, or the equivalent if necessary.

Caution: Refer to Fastener Caution in the Preface section.

2. Install the bank 2, oxygen sensor 2 (4), in the catalytic converter.

Tighten
Tighten the bank 2, oxygen sensor 2 to 41 N·m (30 lb ft).

3. Reconnect the bank 2, oxygen sensor 2 (4), electrical connector to the engine wiring harness electrical connector.
4. Lower the vehicle.