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O2 sensor locations please

Tiny
DESIREE_2007
  • MEMBER
  • 2005 CHEVROLET TRAILBLAZER
  • 74,000 MILES
I have the vehicle listed bove l6 4.2. It is throwing code p0140 which is o2 sensor bank 1 sensor 2, but when my husband and I got the part it looks like it is sensor 1 according to location so where is the sensor 2 exactly located? I am just trying to make sure I am not confused and we are replacing the right sensor. I mean he went off the code to find the part. I guess I am just paranoid it is not the right one because I always assumed it was under the passenger side front door. First of all, bank 1 is the drivers side. And yes, it would be under the drivers door, not through the wheel well?
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Saturday, June 2nd, 2012 AT 1:35 AM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Here is a guide to help you get the oxygen sensor changed out and the sensor locations below:

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

Check out the diagrams for both engine (below). Please let us know if you need anything else to get the problem fixed.

Cheers, Roy
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Monday, June 28th, 2021 AT 8:01 PM
Tiny
DESIREE_2007
  • MEMBER
  • 2 POSTS
Thank you, it is just what I needed. I love this site.
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Monday, June 28th, 2021 AT 8:01 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good to hear. Please use 2CarPros anytime we are here to help.

Cheers, Roy
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Monday, June 28th, 2021 AT 8:01 PM

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