I hooked up a OBDII scanner to my wife's 2006 GMC Sierra SLE because it had a code. The code was P0154 - No activity on O2 Sensor Bank 2 Sensor 1.

You are watching: Bank 2 sensor 2 location gmc

 

I see the four sensors from underneath the truck, but....where is Bank 2 Sensor 1? Is that the driver's side pre-cat O2 sensor, or the passenger's side?

 

I talked to a local GMC dealer's parts department, and the guy said that when it says Bank X Sensor Y on the OBDII scanner/reader you're using....the X is the cylinder number, and the Y is....well...we know what that is.

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Is this true? Thanks for your help.


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vortec350 0


Posted May 30, 2009

vortec350

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Member 0115 postsGender:Male
Posted May 30, 2009

Bank 2 sensor 1 is passengerside IN FRONT of cat,furthest one upstream

Bank 1 is driver side

Sensor 1 is upstream and sensor 2 is downstream (after cats)


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jrrod2004 13


Posted May 30, 2009

jrrod2004

M. Cueva
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Member 138,970 postsName:Mike CuevaLocation:Austin TexasGender:MaleDrives:2015 Impala Limited LTZ
Posted May 30, 2009

This should help in the visual aid:

 

http://www.bsci-ch.org/forums/index.php?...icle&id=769


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bill190 0


Posted May 30, 2009

bill190

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Member 0729 postsLocation:OregonGender:Male
Posted May 30, 2009

I've seen some of these sensors go "upwards" from the exhaust piping. So if you just look under the vehicle from the side, you will not see it!

 

Basically you need to crawl under the vehicle and look at both sides of the exhaust pipes from underneath.


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