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Rlw
Dodge Dakota
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3/16/2008
09:23:05

Subject: Code P0440
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2003 4.7 Quad Cab throwing P0440 code (EVAP System) is all it says. What can I do to fix this problem? I have already replaced the Purge Selonoid.



FSM
Dodge Dakota
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3/16/2008
16:21:30

RE: Code P0440
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P0440-GENERAL EVAP SYSTEM FAILURE

When Monitored: Engine Running. Fuel Level greater than 12%. Ambient Temperature between 4C and 32C (39F and 89F).

Set Condition: The PCM does not see the NVLD switch close during the medium/large leak test. The PCM then will increase the vacuum supply to the EVAP system by increasing flow through the EVAP Purge valve. If the switch does not close with an increase in vacuum an error is detected. Two Trip Fault.



RLW
Dodge Dakota
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3/16/2008
17:36:41

RE: Code P0440
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Message:
How do you fix this?



FSM
Dodge Dakota
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3/17/2008
03:03:48

RE: Code P0440
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Here's how it works. Read all 4 pages.

http://www.search-autoparts.com/searchautoparts/article/articleDetail.jsp?id=377511&pageID=1&sk=&date=




ben
Dodge Dakota
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3/18/2008
15:37:04

RE: Code P0440
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ha ha ha ha



dante
Dodge Dakota
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3/18/2008
22:07:17

RE: Code P0440
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Don't laugh at him. You'll only make him take longer to read through all the pages. He will be distracted, and have to begin all over again.



fgaffer
Dodge Dakota
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3/19/2008
00:20:07

RE: Code P0440
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I have a 02 4x4 qc w/4.7 last mounth i also had the same code. found the vacuum hoses at the canister bye the fuel tank. had large cracks in them. replace them with new vacuum hoses from the local auto store. Hope that will help.
Fgaffer



kris
Dodge Dakota
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3/25/2008
07:40:16

RE: Code P0440
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Check the rubber hoses at the cannister in front of the fuel tank or the lines at the evap test port in the engine compartment right beside the battery. Check the lines at the connections, they might dry rotted.



jacob
Dodge Dakota
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3/24/2010
15:30:05

RE: Code P0440
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Part number for hoses... Fix problem for me

Could not get them from auto part store... Went to dealer.
52102801ad = $7.95
5166499aa = $8.30

They are located about a foot from the gas tank toward the engine. Just crawl under it and start looking around. Can't miss it. :)



Johnny
Dodge Dakota
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2/24/2011
14:17:08

RE: Code P0440
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Message:
What if I don't fix it?



Donald E Pard
Dodge Dakota
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1/08/2019
13:31:13

RE: Code P0440
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Message:
My 03 Dakota throws P0440
At a half tank of gas, has new cap and rubber
hoses. Can not find a pressure valve in fuel
system of emissions



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