Oxygen Sensor: Service and Repair
HEATED OXYGEN SENSOR (H02S) AND CATALYST MONITOR SENSORRemoval and Installation
1. Disconnect the negative battery cable. See BATTERY DISCONNECT.
2. With the vehicle in NEUTRAL, position on a hoist. See LIFTING.
3. Disconnect the heated oxygen sensor (H02S) and the catalyst monitor sensor electrical connector.
NOTE: If necessary, lubricate the H02S and catalyst monitor sensor with Penetrating and Lock Lubricant to aid in removal.
4. Using the special tool, remove the H02S and the catalyst monitor sensor.
NOTE: Apply a light coat of High Temperature Nickel Anti-Seize Lubricant to the threads of the H02S and the catalyst monitor sensor to aid in installation.
5. To install, reverse the removal procedure.