Where is the O2 sensor located and how difficult is it to replace? is it something that l can do myself?

O2 sensor is always located on the exhaust manifold / header pipes.

It is something you can do. You just need a O2 sensor tool (and some liquid wrench). Sometimes you can just use box wrench (if you are lucky).


Good Luck.

It will be by ur manifold & before the cat converter but u probably have more then just one on that yr vehicle.
Sometimes they can be a real pain especially the ones upfront so best to take it to a reliable shop & pay the few bucks to get it installed.
Some shops might do the labour for 20 bucks a piece or no more then 40 bucks tops.

Hope that helps & best of luck.By the way try not to use aftermarket o2 sensors & always try to make sure that it is the o2 sensor before changing them.