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Discussion Starter #1
Two days ago the check engine indicator lit up on my 01 Camry w/47,000
miles. Went to AutoZone this morning and the code received was P0446
which translates to "Evarorative Emission Control System Vent Control
Circuit Malfunction."

Has anyone else in here encountered this and care to point me in the
right direction. I am reading online likely cause is the charcoal
canister and a new gas cap wchich is betweeen $250.00 & $500.00. Say
it isn't so! Unfortunatley car is due for inspection like last month!

Also the AutoZone person indicated they turned off the check engine
light. I did'nt think to ask then but I am now curious if it will come
back on or when???

Thanks in advance!

-wannabe
 
A

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Discussion Starter #2
if it is a fluke it will not turn back on. Keep your gas tank cap tight
and do not over fill the tank. Pray.


<[email protected]> wrote in message
news:[email protected]
> Two days ago the check engine indicator lit up on my 01 Camry w/47,000
> miles. Went to AutoZone this morning and the code received was P0446
> which translates to "Evarorative Emission Control System Vent Control
> Circuit Malfunction."
>
> Has anyone else in here encountered this and care to point me in the
> right direction. I am reading online likely cause is the charcoal
> canister and a new gas cap wchich is betweeen $250.00 & $500.00. Say
> it isn't so! Unfortunatley car is due for inspection like last month!
>
> Also the AutoZone person indicated they turned off the check engine
> light. I did'nt think to ask then but I am now curious if it will come
> back on or when???
>
> Thanks in advance!
>
> -wannabe
>
 
Q

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Discussion Starter #4
If the gascap was loose, you would likely have different additional codes.
The charcoal canister is possible, but so are an inoperative vacuum
switching valve or a loose vacuum hose. One thing that we see a lot is the
canister control valve vacuum hose loose at the airbox. On the back of the
box you will see a valve with a blue plug and an air hose coming off of it.
Make sure that hose is attached to the valve and follow it to ensure it is
attached to a metal pipe that disappears under the car.
If the light does come back on and there is no problem with the above
mentioned, a competent Toyota tech should be able to pinpoint the problem
rather quickly with a vacuum guage and the Toyota tester.
 

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P0446

Actually, I have got the same problem (code 0446) in my Toyota Camry '00.
Three weeks ago, the "Engine Malfunction Light" went off, and I took the car to the Toyota dealer. The dealer replaced the Vacuum Switching Valve (VSV) and charged me a small fortune (over US$ 1,000). Just last Thursday, the light went off again. This time I bought a (cheap) OBD-II scanner and the code was P0446. I filled up the gas tank, I erased the code , I have since then ran some 80 miles and the light hasn't gone off (yet). I remember that, now as well as before, the light went off when I was running low in gas (less than one quarter of the gas tank). Because I lived in Montreal, Canada, which is very cold, I always had my gas tank filled at least half full. Now that I moved to Florida, sometimes I take longer to fill up the tank. Is that possible that there is a relationship between this code and the gas tank being low in fuel? If so, what kind of problem would the "engine malfunction light" possibly indicate? (and is the problem that difficult to fix, given that the dealer apparently didn't manage to?). I would like to know, because I have to take my ca back to the dealer, and in case I have to argue with them, then I would have more basis for my arguments. I wouldn't like to pay that much again, and I am suspicious I have been deceived by the dealer.

Thanks in advance - I don't have any knowledge about cars.


Qslim said:
If the gascap was loose, you would likely have different additional codes.
The charcoal canister is possible, but so are an inoperative vacuum
switching valve or a loose vacuum hose. One thing that we see a lot is the
canister control valve vacuum hose loose at the airbox. On the back of the
box you will see a valve with a blue plug and an air hose coming off of it.
Make sure that hose is attached to the valve and follow it to ensure it is
attached to a metal pipe that disappears under the car.
If the light does come back on and there is no problem with the above
mentioned, a competent Toyota tech should be able to pinpoint the problem
rather quickly with a vacuum guage and the Toyota tester.
 
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