Where is the O2 sensor bank 2 Sensor 2 location on a Mercury Sable 2001? Please hElp

Bank 2 is the rear engine cylinders.

sounds like a air leak ,, bank 2 sensor 2 ?? refers to after the catalytic converter ... could be a faulty sensor but more likely an air leak .... even a faulty fuel tank cap seal is enough to cause problems on these systems

Bank 1 o2 sensor is located in the exhaust manifold up by the motor bank 2 is located downstream futher in front of the cat.converter mounted in the exhaust pipe.

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.

View & Print Options
Cylinder #1 on right side.

- The first oxygen sensor in cylinder bank # 1 is numbered O2 Sensor 1/1.
- The second oxygen sensor in cylinder bank # 1 is numbered O2 Sensor 1/2.
- A third oxygen sensor in cylinder bank # 1 would be numbered O2 Sensor 1/3.
- The first oxygen sensor in cylinder bank # 2 is numbered O2 Sensor 2/1.
- The second oxygen sensor in cylinder bank # 2 is numbered O2 Sensor 1/1.



- If a V-6 or V-8 vehicle only uses one downstream Heated Oxygen Sensor (HO2S) it is numbered O2 Sensor 1/2, even if it uses two upstream HO2S.
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Bank 2, sensor 2 is at the bottom of the engine as you look in from the bumper. It is installed in the exhaust pipe just below the catalytic converter. The bank 1, sensor 2 is at the same location on the back of the engine below the firewall.

See pictures below

Fords are bad about vacum leaks, check all vacum hoses repair as needed.Vacum leak will give an o2 sensor code.

1 of 3 things. is dieing, dead, or wrong mix of Gas. some cars need midgrade gas or higher to run right..

hope this helps you!

I believe that your car only has 1 exhaust pipe. If that's the case, then sensor 2 will be located after the catalytic converter

ok Bank 1 is the rear bank and bank 2 is the front bank sensor 1 in each bank is the one closest to the manifold they have green connectors sensor 2 is the sensor after the cat converter and is a blue connector

The DPFE is located near the EGR valve, it has 2 very thick silicone rubber hoses connected to it that come off the exhaust. It is rectangular and about 1/2 the size of a pack of smokes