Removal and Installation

WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

Rear sensor

With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to JACKING & LIFTING .

Both sensors

If equipped, remove the 7 screws and the underbody cover.

Fig 1: Locating Underbody Cover Screws
Courtesy of FORD MOTOR CO.
Disconnect the heated oxygen sensor (HO2S) electrical connector.

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

Using the special tool, remove the HO2S.
- To install, tighten to 48 Nm (35 lb-ft).
  
  Fig 2: Identifying Heated Oxygen Sensor (HO2S) Electrical Connector And Special Tool
  Courtesy of FORD MOTOR CO.

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

To install, reverse the removal procedure.