I was driving around 40mph and suddenly hit the brakes, and right when I hit the brakes my SES light came on.

I got it checked yesterday and it is P0455 EVAP Control System Leak (Large)

Both the AutoZone guy and my mechanic said that it's nothing to worry about performance wise or how the car will act. It will just leak out gas vapors which will result in a failed emissions.

My gas cap is tight and I will be un-plugging the battery soon, but any other remedies to look for besides replacing the canister?

thanks,
dan

 

are you over the mileage for your emissions warranty? 7yrs/80000 or something like that? if not who cares just go to the dealer and make them fix it.

 

Clear the code, if it's a real problem it will come back...

 

might be one of your cats if it is your covered up till 80K

 

cats, heat shield most likely.

 

No warranty of any sort...

My tech was saying that it's the EVAP solenoid or canister?

What's with these cats I'm hearing about...?

I disconnected the battery and the light went away, but when I womped on it a little bit, the light came on.

 

Where is Nmex when you need him .. LOL..

Hope the cat has not broke apart and gone into the engine ... talk to kamski about that ejj?

 

FYI. cats have nothing to do with evap emissions guys. your tech is right but for other people with an evap leak "SMALL", it can sometimes be a a loose gas cap or a bad rubber seal in the gas cap. it can also be from corrosion on the filler neck and teh cap wont seal tight. these are just more common examples i have noticed from customers coming into the shop i work at. this is not the be all to end all evap answer.

 

From the FSM section EC page 346

Possible cause:

Fuel filler cap remains open or fails to
close.


Incorrect fuel tank vacuum relief valve


Incorrect fuel filler cap used


Foreign matter caught in fuel filler cap.


Leak is in line between intake manifold
and EVAP canister purge volume control
solenoid valve.


Foreign matter caught in EVAP canister
vent control valve.


EVAP canister or fuel tank leaks


EVAP purge line (pipe and rubber tube)
leaks


EVAP purge line rubber tube bent.


Blocked or bent rubber tube to EVAP

control system pressure sensor


Loose or disconnected rubber tube


EVAP canister vent control valve and the
circuit


EVAP canister purge volume control
solenoid valve and the circuit


Fuel tank temperature sensor


O-ring of EVAP canister vent control
valve is missing or damaged.


EVAP control system pressure sensor


Refueling EVAP vapor cut valve


ORVR system leaks

 

Does the EGR valve have anything to do with it? I ask because I had to disconnect it from the UIM when I was doing my SSIM and then putting my OEM UIM back on.

 

EGR shouldn't matter, hook up a smoke machine to the EVAP port and try and find the leak. A good scan tool should be able to turn the solenoid on and off for testing purposes. Without going throught that it's a guess as to which part is bad.