Question about 2001 Nissan Pathfinder

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Where is the bank one sensor 2 oxygen sensor located on a 2001 pathfinder v6 3.5 2wd

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  • James Bock Nov 06, 2010

    mechanic said it was bank one sensor 2, is that the in front of the converter or the one behind it toward the rear of the truck?

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The diagram below is from the Factory Service Manual for a 2001.0 year Pathfinder. The rear oxygen sensors are parts 1 and 3. They are easy to spot from under the car, in the region of the front wheels.


where is the bank one sensor 2 oxygen sensor - angelo_mlc.jpg

Posted on Nov 06, 2010

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All O2 Sensors, are on exhaust pipe, close to converter or in converter

Bank 1--right side of engine
Bank 2--Left side of engine

Do not throw a sensor at it, without knowing that is your problem.Always test,then replace
Codes do not tell you what to replace (education is the key)

Posted on Nov 06, 2010

  • Anonymous Nov 06, 2010

    Sensor #1 first one,inlet,e,g,front
    Sensor #2 outlet,rear one

    Again--they have to be tested,that does not mean produce a scan tool code.
    The rear or #2 sensors, don't fail often or swing much,if the converter is doing it's job.

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SOURCE: where is oxygen sensor bank 1 sensor 2 located on 2001 nissan frontier

Here's a link to your firing order.Bank 1 is cylinder 1,which is on passenger side and sensor 2 is second sensor which is after catalytic converter.Here's the part.

Posted on Mar 20, 2013

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try this
ALLDATA Editor's Note: Always verify #1 cylinder location prior to diagnosis and repair.

- Cylinder bank number one is the bank that contains number one cylinder.


See: Firing Order


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Cylinder #1 on left side.

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Cylinder #1 on right side.

- The first oxygen sensor in cylinder bank # 1 is numbered O2 Sensor 1/1.
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You didn't say which engine you have, so I've included the diagrams of both 4 cyl and 6 cyl so you can see the banks

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Fig. Heated Oxygen (HO2S) location (sensor 1)-2.4L engine

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Fig. Heated Oxygen (HO2S) location (sensor 2)-2.4L engine

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Fig. Heated Oxygen (HO2S) location (bank 1, sensor 2) (bank 2, sensor 2)-2.7L engine

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Fig. Heated Oxygen (HO2S) location (bank 2, sensor 1)-2.7L engine

I hope help you with this (rated this help). Good luck.

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