Cobalt upstream oxygen sensor location please!

Tiny
P TONE
  • MEMBER
  • 2010 CHEVROLET COBALT
  • 2.2L
  • 4 CYL
  • MANUAL
  • 200,000 MILES
I need a picture or diagram for the upstream and downstream and or pictures for a 2010 chevy cobalt 2.2 Ls 2 door standard/manual

I think I'm missing something. Also what's good references for diagrams so I can easily find stuff on my own for stuff like this happens
Saturday, January 10th, 2026 AT 4:53 PM

5 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 55,054 POSTS
The upstream oxygen sensor is located in front of the catalytic converter. Change the sensor with the engine cold, also spray WD40 on the sensor threads/base and let it sit for awhile which can help in the removal/installation. Here is a guide to help you change it and the exact location in the images below.

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

Check out the images (below). Let us know if you need anything else.
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Sunday, January 11th, 2026 AT 10:20 AM
Tiny
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See. I thought it was closer to the engine under a heat shield that's what 1 machanic led me to believe. But I origally thought what this image here is showing so yeah wow
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Sunday, January 11th, 2026 AT 11:55 AM
Tiny
KEN L
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I am glad we could help you get a better understanding of where the sensor is. Let us know if you need anything else.
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Monday, January 12th, 2026 AT 11:07 AM
Tiny
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Well is there any chance it'd actually be located under a heat shield closer to the engine? I found the connecter just not the upstream thing
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Monday, January 12th, 2026 AT 3:38 PM
Tiny
KEN L
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Yes, you see the location of the sensor and if there is a heatshield it will be under it.
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Tuesday, January 13th, 2026 AT 5:11 PM

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