Originally Posted by Yadkin
I have an extended service contract which includes a loaner. I also have the P0456 code, a bluetooth scanner, and common sense. A 'very small leak in EVAP Emm Cntrl Sys', hmmm.
First thing I'm going to do is put some silicone spray on the gas cap threads.
It took about a day and two short trips, but this actually worked. More precisely, I cleaned and lubricated the gas cap threads and O-ring with silicone spray. I then took a shorter trip to the end of the street and back and tried to reset the trouble code but that didn't work. So I drove to work sites the next day per usual, and after a few hours it reset itself.
Shop time: about one minute. Shop supplies: about five cents. Considerably less time and expense than going to the dealer.