check engine light

I have a 2012 sportsman 550 EPS. I moved it out of my shed tonight so I could start installing some lights in the shed. I worked until dark and started the quad to put it back in the shed, the power steering & check engine light came on. i drove it into the shed and shut it off, waited a minute, then started it again and the both lights were off. I looked in the owner’s manual and the check engine light symbol signifies there is an EFI problem and continued use could do serious damage to the engine. I am supposed to go to Jericho ATV Festival on July 31 there is no way a dealer will get it back to me in time. Am I truly risking ruining the machine if I use it for the weekend with the check engine light coming on and off? I am not very mechanical and although any advice will be very much appreciated I will not be able to fix this on my own. I’m pretty much asking if the manual is making it sound much worse than it actually is or if I should adhere to the warning and not use it?