A warning light or trouble code tells you roughly where the problem is. It doesn't always name the part. Replacing parts until the light goes off gets expensive fast, so we find the real cause first and you only pay to fix that.
The check engine light could mean a loose gas cap, a bad sensor or an engine misfire, and the light alone won't tell you how serious it is. Steady light? Get it checked soon. Flashing light? That can mean something serious. Pull over when it's safe and call us at (402) 296-2000.
The toughest problems come and go, and of course the car runs fine the day you bring it in. Anything you can tell us about when it happens makes it easier to find. If the car needs to stay with us for a while, ask for a complimentary loaner when you schedule service.