PO440 Help please?

[Nyyankees3511]

Well i was driving home and i got a check engine light last night. Reset it this morning and it took a while for it to come back had it check they said its code PO440 Evap. I then had a pro check it out he said the flow was low. What do you think it is? Thanks

[WTF??]

http://www.solaraguy.org/viewtopic.php?t=25518

^that should help you

[Nyyankees3511]

Thanks wtf. Those are different codes but similar problems. Usually what does P0440 alone mean? The second guy that check it out used a beefy obd2 checker with all kinds of chips and stuff and it said the flow was low?

[WTF??]

http://www.solaraguy.org/viewtopic.php?t=16121

P0440 – EVAP System Malfunction
· Vapor pressure sensor malfunction
· Fuel tank cap cracked, damaged or incorrectly installed
· Vacuum hose blocked, cracked, torn or disconnected
· Hose or tube blocked, cracked, torn or disconnected
· Fuel tank damaged
· Charcoal canister damaged



Honestly I dont know what the hell the guy is talking about when he says "flow is low"..... WHAT flow??? LOL

anyway the list above should tell you a brief description of what the CEL Code defines. Basically I just had my gas cap pressure tested (failed once, passed once) and went to buy a new gas cap from the dealers for $20.... ever since no problems

first off, just make sure your gas cap is on tight (at least 3 clicks)... drive it around for a while and fill up another tank to see if it comes up again

good luck

[Nyyankees3511]

Ill try that. It could be the vsv right? Wheres the pressure sensor located? The good thing is i still have my totaled car and i can switch any parts i need. Lol thats what that lil comp that he connected to my car said, it said the flow through the lines was low.

[Solorange]

Definatly replace your gas cap first.

[Nyyankees3511]

Ill try that first.

[Jeffrey Olson]

I got the 440 code too. I was driving from California to South Dakota and got off in Salt Lake and found an auto parts store, borrowed their code reader, and they printed out what the code meant. The counter guy recommended I start with a gas cap. I cleared the code, installed the gas cap, and was on my way.. That solved the problem...

Jeff...

[WTF??]

^its great when it works out that way huh...
get an error, find out wut it is, get the part replaced, and ur done!

[Nyyankees3511]

I replaced the gas cap and it hasnt come back.

[Solorange]

You guys are all lucky! I got the code PO446 and it said nothing about a gas cap. So I spent the money on the charcoal canister and it really was my gas cap too.