Check engine light comes on and warnings "service ESC and traction control off" on 2009 Chevrolet Malibu

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When my car is idling for a few minutes these will come on. I took it to autozone and they said there was only one code, "Cylinder 2 misfire". This has happened before and before I could get the code read the check engine light turned off, so it had stayed on about a day and a half. Also, it seems that at least the traction control is still working. Is this anything to worry about and what would I do to check this? Thank you in advance.
(2) Answers
Autozone will not be able to retreive ESC codes. They only can retreive Generic OB2 codes concerning emmision codes. The P0302 code is not related to the ESC light