Yesterday about half way home from work, the check engine light come on. Not on the Mini this time, but the Miata. Just like in the Mini though, there was no discernible reason for it and the car showed no drivability symptoms at all. When I got home I hooked up the bluetooth OBD2 scanner and read the code – P0455 – which translates to ” EVAP Emission System Leak Detected Large Leak.”
The most common cause is your gas cap is too loose. I opened the filler door and twisted the gas cap and when I did it may have moved just a tiny amount. I reset the CEL and we’ll see if it comes back.
On the forum, they say if you just tighten the gas cap and keep driving the light will reset after about 30 miles of driving, so I wonder if it takes 30 miles to show up. We filled up the CTBNL last Tuesday night, so it made 3-1/2 round trips to work and one quick run to the bike store on Saturday, which is roughly 30 miles, before lighting.