Rear O2 Oxygen Sensor

holmesoil@mindspring · Apr 22nd, 2005, 08:28 AM

I have a 2000 Maxima, the rear 02 Oxygen sensor is bad.
I can change it out but where is it?

pete? · Apr 22nd, 2005, 08:37 AM

should in front of the cat.

titan_213 · May 17th, 2005, 11:46 PM

well Pete is a dumb a$$, if is a rear o2, that would mean it is after the cat, hence the name rear O2

jgosses · May 18th, 2005, 09:21 AM

Quote:

Originally Posted by holmesoil@mindspring

I have a 2000 Maxima, the rear 02 Oxygen sensor is bad.
I can change it out but where is it?

You could have 2 rear (after the CAT) sensors, Federal cars have three O2 sensors 2 before the CAT and one rear, California cars have 2 of each. the connectors for the O2 sensors are on the front side of the front (Bank 2) valve cover between it and the radiator California 4 connectors, Federal 3. See TSB NTB02-051 at http://www.infinitihelp.com/Ownershi.../NTB02-051.htm for a location drawing and what Nissan recomends for this condition.

Puppetmaster · May 18th, 2005, 09:35 AM

Quote:

Originally Posted by jgosses

You could have 2 rear (after the CAT) sensors, Federal cars have three O2 sensors 2 before the CAT and one rear, California cars have 2 of each. the connectors for the O2 sensors are on the front side of the front (Bank 2) valve cover between it and the radiator California 4 connectors, Federal 3. See TSB NTB02-051 at http://www.infinitihelp.com/Ownershi.../NTB02-051.htm for a location drawing and what Nissan recomends for this condition.

That's a great diagram there.

Find out the exact code and you'll know exactly which sensor it is. I have a FSM for the 2000 and so if ya need help with the DTC, post here and I'll see if I can help ya with it.