oh i for got to say i have a evo 9!
try socalevo.net. They have good info on 9's and 8's...
By the way, your best bet is to pull the check engine code using an OBDII reader. That will tell you exactly why your car threw the light. Depending on where you live, Autozone rents them for free as well as many other auto parts stores.... go in, ask to borrow the OBDII reader.. use it to pull the code(s)... it will start with P0XXX with the XXX being the code number... then, you can google the code and it will tell you what threw the light. Also, you can reset the light with the same tool.