EGR1586 Egr Valve

(5 STARS) I had a check engine light (ON) and error code P0404, when I checked they said I have to change this PART. And I did, I changed it, Engine sound is gone ! and when you want to speed up the car will go faster, it's a high quality piece. but I had one problem. the engine light is still ON. I don't know what to do.

the product works it fix my problem engine light on dash.