550 warning light help?

[Midds]

Have just driven the 550 up to Hexham for a wedding - a neat 181 miles from home. I stopped to fill up and found that the fuel warning light (fuel pump with slash through it in orange) was still showing even though it is full... I checked oil, water and other fluids and listened to the engine, but it all seemed fine, so I carried on and got here with the F purring like a good'un.

So, should I worry or is this just a faulty sensor? Or (as the manual is at home - doh!) is that a different warning light that I somehow have mistaken for a fuel one?

Any help would be great...

Thanks