2017 3.5 Ecoboost Canister vent valve location

[bpledger2010]

Good afternoon guys! I'm still battling the dreaded P0442 code of my ecoboost. I have replaced the purge solenoid under the hood and thought it could possibly be this canister vent valve but have no idea where it is.... Any help on this would be much appreciated or any other ideas to try would be great.

 

[Steve Tanner]

Did you ever figure this one out? According to the service manual, the canister vent valve is attached to the canister itself, located just in front of the gas tank. Since P0442 is only set under vacuum, it may be a little harder to find with a smoke tester, but any pinhole leak of ~1mm/0.04in can cause it .