Loose gas cap light appeared, I tightened, didn't go away. Next day engine light came on instead. I bought and installed new gas cap but engine light still on.

What is your question?

Can the Hum do a recheck? I don't see that as an option, or can it do a reset? I don't want to go to a repair shop and pay someone $145 to reset it.

How long has your 2008 Ford Taurus had this problem?

One week