Does anyone know how to tell what is wrong with my car when the check engine light stays on? It's a 2K I30T

 

you will have to take it somewhere where they can check it, or if you want to spend the money now and possibly save yourself money in the future, you can go to autozone or one of those places and buy a scanner that will give you the codes and tell you what they are.... if you have a factory service manual, you can see what exactly the codes mean.... these scanners are around 100+ i think, but it can be worth it if you think you may have frequent problems with it.... otherwise just head to a mechanic (or dealer, but they will charge you like h3ll for the diagnostic test) and have them do it....