What is the 2001 Ford Explorer Sport trac oxygen sensor location?

The 2001 Ford Explorer Sport Trac O2 sensors are located in the exhauSTSystem. There's going to be one before the catalytic converter and one after the catalytic converter.All cars that were manufactured post-1980 feature an oxygen sensor. It is located within the emissions control system. When functioning, the O2 sensor sends data to the management computer located within the engine. In Your car, a functioning O2 sensor ensures that Your engine is running at top performance. Additionally, this sensor keeps Your emissions in check and alerts You when emissions are too excessive.The oxygen sensor in Your vehicle measures oxygen levels in the exhaust gases exiting the engine. The oxygen sensor should be replaced every 60,000 to 90,000 miles.