Modern Vespa

Hey! Yesterday I was coming home from work, and suddenly the engine started to kind of rattle, and the Check Engine light came on. I pulled over, and the rattle and the light went off, and I could continue like nothing had happened. Today the exact same thing happened. My scooter has around 20k km. Does anybody have and idea what could be the problem? Thanks in advance, Gábor from Budapest

I had the exact same problem on my 2019 GTS. Buy yourself a bottle of Deoxit D100 with the precision needle application. Clean up the connection to the O2 sensor and clean the connection to the ECU. One of those wires going to the computer is not making good contact. They are low voltage connections and any little corrosion causes major resistance. The ECU then reacts and lights up the engine light.

I am not associated with Deoxit. They sell it on Amazon.com where I bought mine. It's miracle stuff! Here is the web page address.

https://www.amazon.com/CAIG-LABORATORIES-D100L-25C-Contact-Cleaner/dp/B0000YH6F8/ref=sr_1_7?dchild=1&keywords=deoxit&qid=1616113341&sr=8-7