Where is the Bank 1 sensor 2 o2 sensor located?

2008 MERCURY MARINER

210,000 MILES • V6 • 2WD • AUTOMATIC

ALASKA907

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The car is throwing a p2270 code which is the 02 sensor, however I can't seem to locate where the sensor is or even a diagram to show where it's located. It is sensor 2 in bank 1 and should be located just below the catalytic converter but it is not.

Nov 11, 2024 at 1:25 PM

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JACOBANDNICKOLAS

AUTOMOTIVE REPAIR CONTRIBUTOR
110,190 POSTS

Hi,

Bank 1 is the side that has cylinder 1. If you stand at the front of the vehicle, it will be on your left. (see pic 1)

Sensor 2 is at the end of the converter. On this vehicle, the catalytic converters are integral to the exhaust manifold. If you look at pic 2 below, I highlighted both sensor 2 sensors. If I am orienting myself correctly with the pictures, the manifold on the left side of the pic should be bank 1.

Let me know if this helps or if you have other questions.

Take care,

Joe

See pics below.

Images (Click to enlarge)

Nov 11, 2024 at 6:56 PM