Does this make sense why code P0172 is showing up

Question

Car is a 08 Chevy Impala. I put E85 gas in it. Then mixed regular have a half tank of E85...

Answer 1

You need to check the 8th VIN to determine if you can use E85, If the 8th VIN is a 3 then yes you can use E85, The difference here is if this engine is a certified to meet California emission according to the under hood emission sticker , even though you will meet Federal requirement your CK ENG LT will come on