Oxygen Sensor: Service and Repair

NOTICE:
^ The Heated Oxygen Sensor (HO2S) and the Oxygen Sensor use a permanently attached pigtail and connector. Do not remove this pigtail from the Heated Oxygen Sensor. Damage or the removal of the pigtail or the connector could affect the proper operation of the sensor.
^ Take care when handling the heated oxygen sensor. The in-line electrical connector and louvered end must be kept free of grease, dirt or other contaminants. Also, avoid using cleaning solvents of any type. Do not drop or roughly handle the heated oxygen sensor/catalyst monitor. A dropped sensor is a bad sensor.
^ The heated oxygen sensor may be difficult to remove when engine temperature is below 48°C (120°F). Excessive force may damage threads in exhaust manifold or exhaust pipe.
^ 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.

REMOVAL PROCEDURE
1. If HO2S 2 is being replaced, raise the vehicle.
2. Electrical connector of HO2S sensor.
3. Carefully back out heated oxygen sensor.

INSTALLATION PROCEDURE
1. Install the Heated Oxygen Sensor.

Tighten: Sensor to 41 N.m (30 lb. ft).

2. Connect the electrical connector.