Oxygen Sensor: Service and Repair

Oxygen Sensor:

The Oxygen Sensor (O2S) uses a permanently attached pigtail and connector. This pigtail should not be removed from the O2S. Damage or removal of the pigtail or connector could affect proper operation of the O2S.
Use care when handling the O2S. The in-line electrical connector and louvered end must be kept free of grease, dirt or other contaminants. Avoid using cleaning solvents of any type. Do Not drop or handle the O2S roughly.

The O2S may be difficult to remove when engine temperature is below 48°C (118°F). Excessive force may damage threads in exhaust manifold or exhaust pipe.

REMOVE OR DISCONNECT
1. Negative battery cable.
2. O2S electrical connector.
3. Carefully back out O2S.

INSTALL OR CONNECT


NOTE: A special anti-seize compound is used on the sensor threads. The compound consists of a liquid graphite and glass beads. New or service sensors will already have the compound applied to the threads. If a sensor is removed from an engine and if for any reason it is to be reinstalled, the threads must have anti-seize compound applied before reinstallation.


1. Coat threads of O2S with anti-seize compound P/N-5613695 or equivalent if necessary.
2. O2S.

Tighten
O2S to 41 Nm (30 lb ft).

3. O2S electrical connector.
4. Negative battery cable.