P0457 EVAP code.

[Genesiswonderer]

So title. Got this today while driving. I had the auxiliary canister installed at the dealership a little less than a month ago.

Has anyone had problems with the auxiliary canister? Or is it possible they just forgot to connect something back.

Any replies appreciated!

 

[Andyj]

Sounds like the new canister is bad or leaking, or some hose or other part was not reinstalled properly. I'm waiting for a call from my local Hyundai dealer that the back ordered part is available.

 

[Genesiswonderer]

Sounds like the new canister is bad or leaking, or some hose or other part was not reinstalled properly. I'm waiting for a call from my local Hyundai dealer that the back ordered part is available.

Thanks for the reply! That is what I suspect. I’m gonna call the dealership tomorrow and see when I can get it in for them to look at.

 

[Genesiswonderer]

So title. Got this today while driving. I had the auxiliary canister installed at the dealership a little less than a month ago.

Has anyone had problems with the auxiliary canister? Or is it possible they just forgot to connect something back.

Any replies appreciated!

Update: the code was actually p0256, which means small leak. P0257 means large leak. I made a typo in the title.

Anyways took it to the dealer today and they said the canister gasket seal got punched while they were doing it last time. They fixed it and now I am on my way.

Man the negligence and incompetence these days in every industry is terrible.