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Check Engine Light - 2000 Camry
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December 8, 2008, 6:46 PM
Got a new code I need help with - P0446 (so says Auto Zone)

Any help on how to check this out and trouble shoot would be appreciated !


December 8, 2008, 6:52 PM#1
From this list (keep in mind most of these are universal): http://www.allpar.com/fix/computer-codes.html

P0446 EVAP Vent Solenoid Valve Control System

Thats the evaporative air system - you know, the gas tank to charcoal canister thing that prevents gasoline vapors from polluting the outside air. Apparently there's an issue with the control system. Usually if its just a loose gas cap it registers as a leak rather than the control system.


December 8, 2008, 6:54 PM#2
So, would I need to go under the car to see if there are loose wires ?

ANy idea how to reset the computer cycle ? Its a 4 cyl.

Thanks !


December 8, 2008, 9:18 PM#3
The correct way is to clear it with a handheld scanner. Otherwise, you can pull the negative terminal off the battery, leave it off for a little bit and then reconnect it (be mindful of any anti-theft equipment, some do not like main power being removed in this fashion).

Once that clears the code - drive a bit more and see if it comes back. If it does, and it is the same code, your probably looking at a bad vacuum line or bad valve on the EVAP system. They are not particularly complicated - but the shear number of hose running to and from them and the all the valves, make diagnosing it better left to pros.

When I got my EVAP code(s) P0440 ,P0441,P0446 - brought it into the dealership to diagnose. Once they reported a reasonable culprit, I bought the part at the dealership and repaired it myself. Paid $85 for a diagnostic - saw the technician spend about two hours diagnosing the whole system, came back with a bad cut-off valve and potentially bad vapor canister - was quoted $350 for the canister and valve and little more than 4 hours of labor for a total of arpim $800 and change including shop fees. I just bought the cut-off valve for about $30, spend half a day checking the EVAP system and replacing the valve - no more CEL.

I've seen this code pop up and a lot of vehicles, including the 4th gen Camrys and 8th gen Corollas, in particular. About 80% of the time - it was do to the habit of "topping the gas tank off". If you do that on a regular basis, now is the time to stop - continued overfilling will saturate the vapor canister with liquid gasoline, which is destroy the charcoal inside. If you have not been doing this, then you probably have a stuck EVAP vent valve - given enough time, they will go bad. About a $70 part.


May 21, 2009, 3:56 PM#4
These two sites might help. [uc2.blogspot.com] and [www.toyotaoilgel.com]


June 6, 2009, 2:34 AM#5
hello All,

I appreciate the concern which is been rose. The things need to be sorted out because it’s not about the individual but it can be with everyone
thanx
celina
Parking Sensor


June 9, 2009, 1:48 AM#6
I have no idea about it.I have the same problem.if you'll get any idea please mail me also.

Parking Sensor



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