My car just turned 50,000 miles and my check engine light is on.

There are no recalls for a check engine light that I am aware of. A check engine light simply means there is a problem. If you get a fever, you don't know if you have a simple cold or if you have a serious illness. To discover the answer to that question, you go to your doctor. A check engine light is like that, except that you go to your mechanic. With only 50,000 on the car, it is likely a simple problem, but you won't know if you don't check.