If it's brief I wouldn't worry about it. I think around 2012 there was two directives from Guzzi on the engine light. One was a tech bulletin to re-route some wires to prevent the light from prematurely coming on, and the other was a map change, to also inhibit the light.
I might be able to dig up more info if you're interested, but really, for a few seconds of light I wouldn't worry.
Joe