Hey guys/gals I got a quick question, about a week or so ago I got a cel. So I took my car to autozone for a quick scan and p0037 came up. I took it to dealer ship to make sure which 02 sensor. Now I wanna make sure I order the right one: it says bank 1 sensor 2 that would be the rear one correct? Because they want 390$ to replace thx in advance. Sry if error in spelling am posting from iPhone @ work thx.

Yes im having the same error code right now, its the rear o2 sensor...

And WTF!! 390$$$ f** that, do it yourself.

http://mazdatrix.com/getprice.asp?partnum=18-861B-N3H3-9U

Thats where I ordered mine from, they take forever to process the order....Ive been waiting already 1 week for the part.