I figured my o2 was lazy because my se was runnin pig rich and the sensor itself looked factory, Well when I Pulled it out today to put in the new one, The sensor part looked like a 22 calb bullet went through it, there was this huge hole in the aft side, it was quite horrible lookin! lol no wonder it was runnin fat. Anyone else seen or heard of this?

 

 

Happens all the time. Any car, just gets deteriorated. Heat can be a monster.