Originally Posted by
Chefboiali
I would think the CEL would specify which one it was.
Stick around, though. More guru's will see your thread, and have better answers for you.
I just ordered the After-Cat O2 sensor since from what I am finding online (no definitive answers though), it appears I need to replace that.
Edit: Another question, what is the difference between an Air/Fuel sensor and an Oxygen sensor? You can buy both online, but they appear to be the same thing?!?!?
If any of the Guru's on here have any other ideas, please let me know!
Thanks!