1998 S70 Check Engine Light came on right after I filled my tank. I was driving very low almost empty for some few miles before I could find a gas station. The fuel cap seems fine. Could it be because I was driving very low in gas. how can I find out what the code is? Appreciate any feedback.

 

Got to an Auto Zone and have them pull the code and ask them to reset it. See if it comes back on. Tell them you will buy the parts from them to fix it if it comes back on. They sell a tester for around $70.00 that pulls the codes and resets them.