Oxygen Sensor: Service and Repair

HEATED OXYGEN SENSOR (HO2S) AND CATALYST MONITOR SENSOR REMOVAL/INSTALLATION - 3.0L









1. With the vehicle in NEUTRAL, position it on a hoist. See Lifting.





2. Remove the 7 bolts (5 shown) and the LH splash shield.

- To install, tighten to 10 Nm {1.0 kgf-m, 89 in-lbf}.

3. Disconnect the heated oxygen sensor (HO2S) and the catalyst monitor sensor electrical connectors.





4. Using the special tool, remove the HO2S and the catalyst monitor sensor.

- To install, tighten to 48 Nm {4.9 kgf-m, 35 ft-lbf}.

NOTE:If necessary, lubricate the HO2S and catalyst monitor sensor with penetrating and lock lubricant to aid in removal.
5. To install, reverse the removal procedure.

NOTE:Apply a light coat of anti-seize lubricant to the threads of the HO2S and the catalyst monitor sensor.