u/Express-Side-2329

Check engine light started randomly flashing on and off and my car went in limp mode while I was driving it. I went and got my Kia diagnosed and the diagnosis that came up was “Knock signal Range /performance. So I replaced the knock sensor and the check engine light is still on and my car is still driving in limp mode. I went and got it diagnosed again at Autozone and the diagnosis wasn’t there anymore but not sure why the check engine light is still on and my car is still in limp mode. I had taken my car in a few months ago and everything was fine with my car. Could it be that I just need to have the light cleared? I don’t know much about cars! hHELP!!! I have a driving job so this is very frustrating.