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

Note: Remove oxygen sensors with the engine temperature above 48°C (120°F). Otherwise the oxygen sensors may be difficult to remove.

Note: A special anti-seize compound is used on the oxygen sensor threads. New service sensors should already have the compound applied to the threads. Coat the threads of a reused sensor with anti-seize compound P/N 5613695 or equivalent.

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
2. Disconnect the oxygen sensor electrical connector.
3. Remove the rear oxygen sensor from the exhaust manifold.

Caution: Refer to Fastener Caution in the Preface section.

1. Install the oxygen sensor (HO2S) in the exhaust manifold and tighten to 41 N·m (30 lb ft).
2. Connect the oxygen sensor electrical connector.
3. Lower the vehicle.