Check engine light came on 2001 hyundai santa fe

Hi:
You need to have your Hyudai scanned to determine the cause of the check engine light. It could be something as simple as a loose gas cap , or something more complicated, but there are hundreds of reasons the light comes on. A cheap solution is to drive to your local auto parts store, such as Auto Zone , and they will scan your code for free, and let you know what caused it.

check oil level and condition, coolant level, as well the pressure in both systems