[nova1313]

check right behind the fan on the front. When I changed mine it was there. Right on the downpipe. The wiring goes off to the left of the engine bay. It's colors do not match up with the autozone replacement. Make sure thats what it is because mine threw a code for that sensor and it was really my cat that was bad.

Also make sure the downpipe ground is still on. Crawl under the car and check. That also apparently effects it.