Car keeps dying

The check engine light stays on and engine keeps dying. I live in Chicago so I thought the weather was the issue. I changed the battery. The problem persisted. I had a diagnostic done and it was suggested I change the 02 sensor. I did. The light is still on. I had another diagnostic done and it was suggested I get a tune up. Anyone experienced trouble with cengine starting?

It's unclear from your OP if you DIY. If so, you'll need to post back with more information in order for anyone to try to help.

Go to an auto parts store like AutoZone, they scan your car for free and give u a printout of the codes with a description. I use them often.

Does the car die and not turn back on? Do you have to jump it? Please post more info.