Oxygen Sensor: Service and Repair

Description:

Removal Procedure

Notice: Handle the oxygen sensors carefully in order to prevent damage to the component. Keep the electrical connector and the louvered end free of contaminants. Do not use cleaning solvents on the sensor. Do not drop or mishandle the sensor.

Notice: Numbers in text in parenthesis correspond to numbered components in image.


Important: Removal of the oxygen sensor is easier when the engine temperature is above 48°C (120°F).

1. Raise and support the vehicle.

2. Disconnect the sensor harness connector.

3. Remove the oxygen sensor.

^ Bank 1 Sensor 2 (1)

^ Bank 1 Sensor 1 (2)

^ Bank 2 Sensor 1 (3)

^ Bank 2 Sensor 2 (4)

Installation Procedure

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

1. Install the oxygen sensor.

^ Bank 1 Sensor 2 (1)

^ Bank 1 Sensor 1 (2)

^ Bank 2 Sensor 1 (3)

^ Bank 2 Sensor 2 (4)

Important: Make sure that all of the harness retaining clips are intact. The harness must not contact any of the hot exhaust components. The HO2S pigtail has white tape at the intervals, indicating the proper location of each retaining clip. When connecting the sensor pigtail to the harness, ensure that the connector seal is crushed uniformly all the way around between the connectors.

2. Connect the sensor harness connector.

3. Lower the vehicle.