P0440,441,446

2002 Tacoma check engine light came on with this codes 440,441,446 check gas cap, pass check hoses and replaced one and run EVAP smoke machine and found a leak on the filler pipe hoping this fix my problem

 

If light comes on again it's probably a rusted out fuel tank. Get a rubber glove and affix smoker to gasoline filler pipe and watch for smoke at frame at top of tank at straps. If you live any where that salt is used... plan on a new tank.

 

I've had those codes. In my case I had to replace the charcoal canister because the VSV had stopped working. At the time you could not buy just the VSV, only the entire canister. Since then I also had to replace the VSV for evap under the hood. When those VSV stop working, you'll get evap codes. You can test them with a 12 volt power source. I used some alligator clips on my battery. Disconnect the VSV plug and put power to the contacts. The VSV should open or close, whichever the case may be. No click=no good. It could also be the gas tank. I was luck there; no holes. My CEL has been off since I changed the VSV last fall. That's the longest amount of time since I bought the truck. I also had to change the air/fuel and o2 sensors. Happy camper now though.