Cobalt upstream oxygen sensor location please!

2010 CHEVROLET COBALT
200,000 MILES • 2.2L • 4 CYL • MANUAL
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P TONE
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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
Jan 10, 2026 at 4:53 PM
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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.
Image (Click to enlarge)
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Jan 11, 2026 at 10:20 AM
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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
Jan 11, 2026 at 11:55 AM
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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.
Jan 12, 2026 at 11:07 AM
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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
Jan 12, 2026 at 3:38 PM
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Yes, you see the location of the sensor and if there is a heatshield it will be under it.
Jan 13, 2026 at 5:11 PM