the part no. are 64,2387,79856
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.
The 2002 Pathfinder oxygen sensors are critical part of the engine management system. You can find the oxygen sensors in the exhaust system.
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)
IN THE EXHAUST SYTEM meaning a 4 cylinder has 2 a v6 has 4. IN THE EXHAUST SYTEM meaning a 4 cylinder has 2 a v6 has 4.
There is 2 oxygen sensors on the 2002 Nissen altima
four
All O2 sensors are threaded into the exhaust system at various points.
one is in the exhaust manifold, one goes into converter
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.
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 .