AN400 '17 and' 18 - same problem twice in a row

[vcsehi]

Hi All
I need some advice with the newer Burgmans.

3 weeks ago I purchased a '17 AN400, which has popped the check engine light a day after I got it. Dealer took an attempt to "fix it" but they probably didn't dig deep and days later the same problem appeared, so it went back and I got a refund.

Yesterday I got a same model, but '18, and guess what, today the engine light lit up again on this one too.

Both bikes were running well, so I guess it would be some electrical or sensor issues, but what do I know, I am pretty clueless about these things.
Is there any well know issues with these newer Burgmans which can cause these warnings? I had an older one (2010) years ago and never had a problem with it.
Both of these are very low mileages for the age (the '17 had 6k and this '18 has 3.2k miles) so probably spent some time sitting in the dust.

I am getting to the point to just let these Burgmans go and just get a Honda.

[roadster]

The only obvious common factor would be stale fuel issues with the now notorious ethanol related difficulties which occur when machines stand unused for months on end. If you want to persevere rather than refer back to the dealer you could drain the tank and then fill up with a gallon of E5 petrol and add some injector cleaning additive. If its a fuel issue it should clear within 50 miles or so. I have found products such as "Ethanol Shield" very effective in bikes which stand unused and in stored fuel too.

[vcsehi]

The only obvious common factor would be stale fuel issues with the now notorious ethanol related difficulties which occur when machines stand unused for months on end. If you want to persevere rather than refer back to the dealer you could drain the tank and then fill up with a gallon of E5 petrol and add some injector cleaning additive. If its a fuel issue it should clear within 50 miles or so. I have found products such as "Ethanol Shield" very effective in bikes which stand unused and in stored fuel too.

Good point, make sense as right after the 2nd fill up the error light now has gone...
I probably judged too soon as the while `17 likely had some other issues as the ABS light has lit up and gone very infrequently, but the `18 is pretty much flawless now..
I guess it was just weird that the engine light pops up within 3 weeks on 2 different bikes.
I have just found the "paperclip method" in case the light comes up again, to see what code it gives. I hope I won't need it

Thanks