yes (2) one upstream (in exhaust manifold) and one downstream (just before catalytic converter) underneath car (exhaust).
There are two oxygen sensors on a Nissan Sentra. This vehicle is an ultra-low emission car, thus needing only two oxygen sensors.
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.
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 .
Assuming you have the V-6 engine, it has two downstream (after the cats) O2 sensors and two upstream (before the cats) Air/Fuel Ratio Sensors. So the answer to your question is two O2 sensors.
it has two one in front of engine another one underneat in the muffler pipe
The Jetta has two oxygen sensors.
The 4 cylinder models have two oxygen sensors, and the V6 models have four oxygen sensors.
The 5.2L has two oxygen sensors.
I have a 2000 olds alero 4 clylinder and yes it has two oxygen sensors!! I have a 2000 olds alero 4 clylinder and yes it has two oxygen sensors!!
it has 4 sensors two before cat and two after
there are two located on the y pipe prior too the pre cats and one more in the rear converter
There are two oxygen sensors screwed into the exhaust on the rear of the engine.