I have a 1995 SE and it has only one. It's located after the two sides of the manifolds meet just before the pre catalytic converter. You can access it from the driver side right under the driver's side door.
And they are expensive to replace... (i replaced one @ $400)
The 2000 Nissan Pathfinder has a total of four oxygen sensors - two before the catalytic converter, and two after the converter. The front sensors have 3-wires, and the rear sensors have 4-wires. For a good quality OE-style sensor, they'll cost around $100 each.
There are two oxygen sensors on a Nissan Sentra. This vehicle is an ultra-low emission car, thus needing only two oxygen sensors.
4 oxygen sensors (2 front and 2 rear)
four
There is 2 oxygen sensors on the 2002 Nissen altima
The 2008 Nissan Pathfinder has 24 valves.
This particular model has two oxygen sensors . The first is on the intake manifold facing the radiator and the other is under the vehicle on the exhaust pipe .
The Nissan pathfinder seats seven people, driver included.
The gas tank on the 2009 Nissan Pathfinder holds 21.1 gal..
The gas tank on the 2011 Nissan Pathfinder holds 21.1 gal..
The gas tank on the 2008 Nissan Pathfinder holds 21.1 gal..