It is on the exhaust system. Basically, you remove the wire to it and it screws out of the exhaust. Here is a guide that can help you change it out with diagrams below to show you how on your car.
https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor
Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
Images (Click to enlarge)
Sep 16, 2009 at 12:53 PM