Diesel Data: Automotive Repair

Catalyst Monitor Sensor

CATALYST MONITOR SENSOR


Socket, Exhaust Gas Oxygen Sensor:






SPECIAL TOOL(S)

REMOVAL
1. Disconnect the battery ground cable.
2. Raise and support the vehicle.







3. NOTE: Two catalyst monitor sensors are used for the engine control system. They are located in the dual converter Y pipe downstream from the catalyst. The left side catalyst monitor sensor is shown, the right side is similar.

Disconnect the connector.







4. NOTE: If necessary, lubricate the sensors with penetrating and lock lubricant to assist in removal.

Using the special tool, remove the catalyst monitor sensors from the dual converter Y pipe.

INSTALLATION







1. To install, reverse the removal procedure.