urmajest

Hello.

My 2006 scion tC (with 44000miles on it) had the check engine light on a month ago. I hit the
toyota dealership to get a $46 diagnosis of the check engine light.
The receipt reads

I don't know what they did, probably just reset it, but they made the light off. After a couple of days,
the light came on again as soon as some fuel (not full but halfway) has been filled at a gas station. I visited a local auto repair shop and the technician there told me EVAP is not a big problem and it would be waste of money replacing it. However, it did not make much sense to me since keeping check engine light on will prevent me from being notified with other future issues. Should I really pay $359.99 to replace it? Any suggestions?


P.S.
About a week ago from the first time the check engine light was on, there was an incident at a gas station. The trigger of the gas gun was stuck while I was getting it out from the filler neck and caused some gas running over the filler neck area. I think this incident is related to the issue.

SquallLHeart

that is probably the case.

and if it isn't already obvious.. make sure to tighten the gas cap until it clicks as well.

urmajest

I've checked on it several times. Thanks.

gwtc

iTrader: (4)

OK, I'm throwing the same codes, actually just: P0441 and P0455, I always make sure that the gas cap is tight, I also had an incident where the gas nozzle did not click and gas spilled all over. I'm going to buy a new gas cap and see if that helps. Any other ideas? anybody?

gwtc

iTrader: (4)

I changed the gas cap, problem solved......

urmajest

Good to hear that. I also ordered one.

gwtc

iTrader: (4)

Hope that fixes your too.

urmajest

It works. Thank you! If I haven't checked out this forum, I should have
ended up spending $400 in the dealership without turning the light off.

gwtc

iTrader: (4)

kayi078

iTrader: (1)

same problem to me. Changed the gas cap and CEL is gone

Coolwaterz

u paid $46 for something autozone does for free????

SirPhobos1

I just had P0456 pop up yesterday, so I went ahead and ordered a new gas cap, mine was clicking almost right away when putting it back on... Thing is, it's been doing that for a while and i just NOW got a CEL. So, I hope it's just the gas cap and not something more serious...

How long after you changed the gas cap did it go away, or did you reset it yourself?

gwtc

iTrader: (4)

You have to reset the ECU yourself, you either go a shop or store that can remove it for you, or just disconnect the battery for like 5 min., but don't forget your OD readings will go back to zero and you'll have to reprogram the windows and roof, if you don't know how, search and you'll find it, good luck.

SirPhobos1

Yeah, I remember the annoyance of going through all those reinitialize steps... I pulled power earlier, after attempting to force the gas cap to tighten properly, but it must not have been powered down for long enough, because the CEL was still there when i put the neg. terminal back on and started her up.

gwtc

iTrader: (4)

Try pulling the EFI fuse from the fuse box under the hood, that works sometimes, take it out and go in the house and do what you gotta do and a few min later put it back in and see if that does it, that works 50% of the time.

stmorris91889

i pulled these same exact codes as above (P0441,P0455,P0456) and i replaced the gas cap. light has been off for a couple of weeks now.

SirPhobos1

Put the new gas cap on yesterday and reset the light this morning, If I don't post anything else here, you'll know this worked for me as well!

gwtc

iTrader: (4)

Good luck

kornkrop86

Had to do the gas cap swap today myself. Wouldn't even click. As long as the vac in my gas tank is good enough to pass emissions ill be happy. damn GA.

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TxtC27

I'm having the same code. Guess I'll order a gas cap, too.