I had the code P0456 come up with an EVAP Emission Control system very small leak. Can anyone tell me where I might start looking to find the leak? Thank you.

 

I just had the same code come up. I was told it was probably my gas cap needed to be replaced, so I did. I was told it might take up to 100 miles for the code to reset itself, so I'll drive it for awhile and see if that solved the problem.

 

you buy yourself a smoke machine, connect the machine to the test port under the hood (it has a green cap like a tire valve) energize the machine and if you have a leak, you'll see where it's comming from in a matter of seconds.

that's where you might start looking for the leak