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Joined: Mar 2003
Posts: 78
Jimbo
Member
Jimbo
Member

Joined: Mar 2003
Posts: 78
Las Vegas
May 13, 11:51am - #15504 
Need help with C.E.L. P0440 & P0446

Need help with C.E.L. P0440 & P0446
I know it says evaporative system vent circuit malfunction and what not. They come on every 10 days or so, and I've been resetting them.
I don't have an air Intake system, its stock. I've been looking for vacuum leaks, but can't find any. Any ideas???
thanks!

Joined: Dec 2002
Posts: 1,660
Grand-Touring-Dan
ECelica Staff
Grand-Touring-Dan
2001 Spec Blue Toyota Celica
ECelica Staff
2001 Toyota Celica

Joined: Dec 2002
Posts: 1,660
Houston, TX
May 14, 12:07am - #15505 
Check the gas tank cap. Make sure you screw that on all the way. The CEL goes off on toyotas if not screwed in all the way.

Joined: Mar 2003
Posts: 78
Jimbo
Member
Jimbo
Member

Joined: Mar 2003
Posts: 78
Las Vegas
May 13, 4:24pm - #15506 
thanks, but I'm afraid its not the gas cap. I always make sure its tight.

Joined: Dec 2002
Posts: 1,660
Grand-Touring-Dan
ECelica Staff
Grand-Touring-Dan
2001 Spec Blue Toyota Celica
ECelica Staff
2001 Toyota Celica

Joined: Dec 2002
Posts: 1,660
Houston, TX
May 13, 4:49pm - #15507 
worth a shot. An evap system code is not a good one to find. You may have to take it to the dealer for some work.

Joined: Feb 2003
Posts: 55
ryansceli
Member
ryansceli
Member

Joined: Feb 2003
Posts: 55
Louisville, Ky
May 14, 7:19pm - #15508 
This is from the shop service manual:

Possible problems with code P0440:
-Hose or tube crakced, hole, damaged or loose seal
-Fuel tank cap incorrectly installed
-Vacuum hose crakced, hole, blocked, damaged or disconnected
-Fuel tank crakced, hole or damaged
-Charcoal canister cracked, hole or damaged
-Open or short in vapor pressure sensor circuit
-Vapor pressure sensor
-Fuel tank over fill check valve cracked or damaged
-ECM

The possible problems for P0446 are along the same lines as these. Seems to be there's too much crap that can go wrong with cars.

[ 05-14-2003, 07:19 PM: Message edited by: ryansceli ]


~~Ryan~~ `n stuff
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Carbonblue2005GT
Carbonblue2005GT
2005 Toyota Celica GT
Walnut Creek, CA

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