Heated Oxygen Sensor: Removal
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2002 Ford RV Cutaway, 2002 Ford Pickup, 2002 Ford F550 Super Duty, 2002 Ford F450 Super Duty, and 2002 Ford Excursion. However, it is still accessible from the selected car via links, so may be relevant.
Unplug electrical connector from Heated Oxygen Sensor (HO2S). Sensor may be difficult to remove when engine temperature is less than 120°F (48°C). Carefully remove HO2S sensor from exhaust pipe.