Originally Posted by Kane
Stop at a local AutoZone and they'll likely run a diagnostic for free.
Unless you want to give the stealership a hundred bucks.
Bingo. DTC's (Diagnostic Trouble Code)s are stored when that little light , Check Engine Light (CEL) comes on. That stored code helps tell where to start looking to the troubleshooter.
Autozone, Advance Auto etc.
Or buy a scanner for yourself. Darned handy to own. And cheap depending on the model. For one just to check and clear DTC's about $30.