5 evap codes, replace canister

[mpgaller]

Hi, I have a 2005 vibe and last year CEL came on for P043E P043F P2401 P2402 and P2419. Found the bulletin saying if these five codes are stored together to replace the evap canister. Had that done and everything was fine for a year. Then all five codes came back again. The part was still under warranty so I had it done again. Three days after I put the second one in all the codes are back again. Any idea what else could cause this problem/has this happened to anyone else? I know its not hurting the engine but I would like it fixed. Thanks

[lannvouivre]

Did you get a Toyota canister? Just curious.

[mpgaller]

Both canisters were from GM although they could get them from Toyota, not 100% sure about that

[vibrologist]

Seems you are not the first one experiencing this problem. This thread may be long but it sure has some hints and pointers:
viewtopic.php?t=23221" onclick="window.open(this.href);return false;

[ehoff121]

Silly question, but do you have a FWD or AWD?

They have different canisters, so if there was a mix up there, you might expect some issues.

[mpgaller]

Silly question, but do you have a FWD or AWD?

They have different canisters, so if there was a mix up there, you might expect some issues.

I have a FWD and they made sure to double check to make sure they have the right one

[mpgaller]

Seems you are not the first one experiencing this problem. This thread may be long but it sure has some hints and pointers:
viewtopic.php?t=23221" onclick="window.open(this.href);return false;

I might be missing something but I see nothing in this link that could even be slightly helpful to me. Thanks though

[ehoff121]

http://www.yarisworld.com/forums/archiv ... 25989.html

Interesting thread on yaris world with posts from '05 Corolla owners. Do you tend to top off the tank at fill up after the pump stops?

My '05 AWD had different codes with the EVAP system that turned out to be a leak in the corrugated plastic hose.

[vibrologist]

Seems you are not the first one experiencing this problem. This thread may be long but it sure has some hints and pointers:
viewtopic.php?t=23221" onclick="window.open(this.href);return false;

I might be missing something but I see nothing in this link that could even be slightly helpful to me. Thanks though

You already replaced the canister with out success. That means most likely the canister you replaced was fine. In the related thread a guy opined that multiple EVAP Codes are likely caused by one defect. Most likely a valve is stuck open or closed.
On a Mazda forum I ran across one good explanation of the EVAP system: hixx wrote:

The evap system consists of a vent valve ( as fuel is removed from the tank the pcm opens the vent valve to replace the fuel that is removed to keep the tank from imploding)
A purge valve ( this valve opens to the charcoal canister to expel excess pressure so the tank does not expand and burst)
A pressure sensor ( the sensor mounts on top of the tank and reports pressure to the PCM)
The purge valve vents to the intake so that fuel vapors are burned
The system is a low pressure system, never more than 1 psi. More than likely you have a vent valve stuck open. Vent valves suck in outside air and over time suck in dirt/dust which causes them to stick. A bad purge valve generally sets a code specific to the purge valve. If you put 7-8 psi on the evap system you will likely cause a leak.

With that in mind I would make a leak test and or inspect and clean the individual parts that make up the whole system.

[lannvouivre]

http://www.yarisworld.com/forums/archiv ... 25989.html

Interesting thread on yaris world with posts from '05 Corolla owners. Do you tend to top off the tank at fill up after the pump stops?

My '05 AWD had different codes with the EVAP system that turned out to be a leak in the corrugated plastic hose.

For anyone reading this later on and wondering about the relevance, never top off your tank after it cuts off because you can damage the EVAP system like that.

The EVAP system pulls fuel vapors from the tank and stores them in the charcoal canister to be vacuumed into the engine and burned when the car is running. When you fill the tank, the fuel vapors have to go somewhere, but not the atmosphere...so that's what this system does.

The pump shuts off automatically to prevent damage to the EVAP system and keep it from overflowing, so for the love of all that is holy, don't top off. It doesn't shut the pump off just for laughs or to rip you off.