You are going to have to take it to the dealer and have them read out the codes and figure it out. There have been a number of reports of these on the 2.0L engine with knock sensor codes. There's now a software fix and TSB for them. I can't recall many reports like this on the 1.5 engine. Hopefully it's something straightforward. Good luck and keep us posted.
The warning has been on for two days. I went to drop off the car at the dealer and filled out the form. Started the car to get the mileage and the warning went out. Leaving at the dealer to see what's going on.
This happened to me. Take the emergency fuel funnel adapter in the spare tire area and stick it in the fuel filler neck in and out 10 times. That should clear it if it happens again. The second flap gets stuck.