X3 on the Checker, Autozone, etc. It's free, and you can do it yourself or have them read it for you. Clear the code and see if it comes back right away (depending on what the code is). Then, post up the code and someone can tell you what the likely cause is.
Horribly Painted Moonglow '95 FZJ80 Has Some - Still Needs More!
White 2008 GX470 - Nearly Stock
"I drive an ECO-FRIENDLY FZJ80...It's got a salvage title which makes it a REPURPOSED/REUSED/RECYCLED vehicle. Therefore, don't mess with me when I park in the "Reserved for Green Vehicle" spots in Boulder!!!