2000 Ford Taurus SE 6 Cyl 3.0L
wer e is the O2 sensor its on bay 1 section 1
The oxygen sensor is located below the engine in the exhaust pipe before the catalytic converter and muffler. It is mounted in the pipe with wires going to it. You need a special socket to remove it in most cases but sometimes you can do it with a wrench. When replacing it be sure to put anti seize lubricant on the threads so it can be serviced again in the future.