throwing code P0449, cant figure out whats wrong
Well like the title says im throwing code P0449. evap emission cont/vent valve. Any clue on what to do to solve this problem?
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http://www.gearchatter.com/viewpost17792.php
there is a good description on what the code is there, maybe it can help you narrow down your problems |
Originally Posted by SilverBalt
(Post 2055060)
http://www.gearchatter.com/viewpost17792.php
there is a good description on what the code is there, maybe it can help you narrow down your problems bump |
come on guys, anyone?
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Big Black thing under the back of the car behind the gas tank. It's near the Fuel Filter.
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Originally Posted by YellowLT
(Post 2057185)
Big Black thing under the back of the car behind the gas tank. It's near the Fuel Filter.
bump |
It depends on which valve your needing. The Evap canister vent valve is located on the canister itself under your car just infront of your fuel tank. Pic below.
http://img101.imageshack.us/img101/3...anisternt8.jpg For the purge valve, it's here: http://img329.imageshack.us/img329/7...noidl61hn7.jpg |
THANK YOU SO MUCH!!! i cant tell you how much i appreciate this. any advice to how to go about diagnosing the problem and fixing it?
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That part I'm not too good on :). Even I don't follow my own advice. That's how bad it is :).
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bump
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Originally Posted by fr33k
(Post 2057341)
It depends on which valve your needing. The Evap canister vent valve is located on the canister itself under your car just infront of your fuel tank. Pic below.
http://img101.imageshack.us/img101/3...anisternt8.jpg For the purge valve, it's here: http://img329.imageshack.us/img329/7...noidl61hn7.jpg |
yea. number 24 is the canister. It looks like it's not too hard to replace. Ya just jack the car up, disconnect 1 wiring harness, disconnect 3 hoses, and take out 1 bolt (number 23). After that, you pull the can outbound and it slides off the other retainer. Your all done.
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thanks i am gunna replace mine this weekend. it didnt look hard when i looked at it under the car...
thanks really appreciate it. |
Joker8810: How did you fare with this task? How much was the canister? I too have to do this myself.
did you replace the entire canister or just the vent valve? |
If you hear the knocking in the trunk after shutting the car off then the one onthe cannister is working
I would think. Check the connector to see if there is any sign of corrosion (green residue on pins and in the socket) if so clean up with contact cleaner and apply some dielectic grease and try it again. As far as the one under the hood I would check all hose etc... that connect to the valve for signs of chaffing etc. |
check all your vac lines. Like i was telling you that one day you probably have a leak somewhere or a bad part somewhere in the lines.
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a few days ago i did some investigating into the p0449 code that i am throwing. come to find out, once i got under the car, it's a broken wire. the white wire that is connected to the evap canister vent valve is broken, and only the orange wire is in tact. so i cut the orange and pulled the wires out and left the connectors in tact so that junk doesn't get up in the vent valve. CED here i come.
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Originally Posted by Fresh
(Post 2302814)
a few days ago i did some investigating into the p0449 code that i am throwing. come to find out, once i got under the car, it's a broken wire. the white wire that is connected to the evap canister vent valve is broken, and only the orange wire is in tact. so i cut the orange and pulled the wires out and left the connectors in tact so that junk doesn't get up in the vent valve. CED here i come.
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exhaust install....
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Originally Posted by originaladrian
(Post 2302925)
iv been running fine, and monitoring my car very closely. unfortunately im still throwing the code but thats it. let me take a look at these wires on my car. how do u think it got cut?
the thing is this part had already been fixed by the dealership. it threw the code before and the tech found that it was due to a dry rotted wire that broke. the same one i believe. then he rewired it, and now it was cleanly broken. this all happened after the exhaust install. |
Originally Posted by Fresh
(Post 2303637)
not sure....it was a nice clean cut by the looks of it. the wire wasn't like pulled out or anything.
the thing is this part had already been fixed by the dealership. it threw the code before and the tech found that it was due to a dry rotted wire that broke. the same one i believe. then he rewired it, and now it was cleanly broken. this all happened after the exhaust install. |
Originally Posted by originaladrian
(Post 2304298)
hey if u get a chance i would really appreciate a picture. there are allot of wires lol.
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I'm hanging the p0449 problem
I'm having a P0449 problem but I have changed the EVAP valve purge valve and charcoal box but I an exhaust leak on my car would the exhaust leak be the cause of the P0449 code?
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I have an 09 SS turbo. I had a P0495. I did not really do much in the way of diagnostics. The Evap system does not have many parts. I changed the fuel cap - since my car is a 2009 and it was the original. I also changed the vapor canister valve/solenoid (ACDelco 22865590) along with the adapter harness so I could plug it in (ACDelco 19257603). That solved the problem. I did not even change the whole charcoal canister - just the solenoid valve.
There is a valve under the hood. There is also a pipe that feeds that. I inspected the pipe and it looked good. Just in case I ordered the valve (ACDelco 214-1473) since it was only $18 ... but I never needed it. I guess one day I'll just pop it in there since it's just sitting right there on top of the intake under the hood ... 2 minute job. But the code has been gone for just about a year ... so the fuel cap and/or canister valve took care of the problem. According to AlldataDiy - DTC P0443 - Evaporative Emission (EVAP) Purge Solenoid Control Circuit DTC P0449 - Evaporative Emission (EVAP) Vent Solenoid Control Circuit If you read AlldataDiy - they seem to interchange the terms vent and purge - which does not help. Just remember there is a solenoid/valve in the canister (by the fuel tank) and also a valve under the hood. P0449 sounds like the valve under the hood has a high resistance or is open. I would change that since they cost almost no money. If that does not fix it, then you may have an electrical issue or perhaps a leak. |
the p0449 is for the vent valve n u say u replaced the purge solenoid which is under the hood. the vent valve is on the charcoal cannister above the fuel tank pressure sensor. which did you replace? i think i replaced my vent valve like 3 years ago n it got rid of that code
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