Bank one means the same side of the engine as the number one cylinder. Number 2 would be the second sensor on that side. usually this means that you could have 2 or more catalytic converters and that it could be after one of these.
the part no. are 64,2387,79856
And they are expensive to replace... (i replaced one @ $400)
The oxygen sensor is located on the exhaust manifold and is the only item on the exhaust with wires going to it.
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.
hi, my friend the cost to replace the oxigen sensor depends if you go to the Nissan dealership is about $120.00 for one oxigen sensor or you can go to the discount auto parts, will cost $70.00 and it's easy to replace. you can do yourself and save a lot of money!! but make sure what sensor is not working because your Nissan pathfinder have 4 oxigen sensor. one before the catalistic and one after the catalistic. but Nissan pathfinder have two catalistics.
If the Nissan truck is either a V6 or a V8, the oxygen sensor will be located in the manifold. Sometimes it will be placed just below the manifold.
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.
The 2002 Pathfinder oxygen sensors are critical part of the engine management system. You can find the oxygen sensors in the exhaust system.
The upstream oxygen sensor is located in the exhaust pipe between the exhaust manifold and the catalytic converter The downstream oxygen sensor is located at the catalytic converter outlet
between the exhaust maniflod and the cadillac converter
The 1998 Pathfinder right rear oxygen sensor can be found in the cargo compartment. The oxygen sensor will be beneath the cargo floor, where the spare tire is housed.
Just one and its located right in the middle of the front of the motor.