hi my check engine code read was P0031 bank 1 sensor 1.

Im a little confused of the location .. looking at this auto zone site, I see that its the front passenger side; however,

This guy on is replacing it all the way in the back of passenger side???

also will http://www.ebay.com/itm/401000249289?_trksid=p2060353.m2763.l2649&ssPageName=STRK%3AMEBIDX%3AITo2 sensor work for me?

I would appreciate any help.. thanks

 

see my post entitled Air fuel ratio (A/F) sensor 1 replaced

 

Please don't buy a used O2 sensor!

If you go through the hassle of changing it, you sure don't want to have to repeat it any time soon.

.02

EDIT: By the way, what year is your car? Your Federal Emissions Warranty may still cover the O2 sensor. If not, I'd certainly get something like a Denso unit from RockAuto before I'd even think about a used one. Also, here's a link to the FSM for info: http://www.nicoclub.com/FSM/G35/Sedan/

EDIT2: I think you are misunderstanding the location info. The location shown in that video IS the "front" or "forward" passenger side, as opposed to the "rear" location which is even further back (in the cat). It does not mean that it should be in front of the engine.

 

Thanks guys i found the location for it now the prob is that its just stuck rusted on it and i cant open it with the o2 sensor socket!! im going to try buying penetration oil and ill see if that helps

it is a 2007 infiniti g35x

 

The best penetrating oil you can get is actually just a homemade 50/50 mix of automatic tranny fluid and acetone. Many tests on the internet verifying this.

 

yep pick up some penetrating oil and let it soak in for 5 minutes before you try to get it off. if that doesnt work you can try heating it with a torch and trying again while its hot.

 

I got mine off by unplugging them first and then using the O2 socket set from Harbor Freight (Returned it afterwards). I had to use some flexible ratchets though due to the crappy angle.

 

Mines is really rusted on there.. I tired some penetration oil and heating it up and ended up taking it to the sears auto center .. they couldnt even take it out

Dont really know where to take it to get it fixed ! its killin my fuel economy