Code P0440 out of nowhere

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danman132x
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Code P0440 out of nowhere

Post by danman132x » Thu Mar 26, 2009 10:13 am

I see this is the code for the EVAP. I got it this morning with super heavy rain if that might have anything to do with it. What do I need to do to fix it, or can I just pull the battery for a lil to clear the code.
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gr8whtd0pe
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Post by gr8whtd0pe » Thu Mar 26, 2009 10:25 am

get gas lately?
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Post by Sabersoul » Thu Mar 26, 2009 10:45 am

Tighten/replace your gas cap first and then pull the Neg. battery cable for a little while to clear the code and see if it comes back. These codes can be a pain to track down at times, I know from experience because mine's been throwing P0441 for a while now.

danman132x
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Post by danman132x » Thu Mar 26, 2009 3:52 pm

I put gas 77 miles ago. I never had this problem till today. I removed the gas cap to check it out today, and the seal looks brand new. I've had this locking cap for a year now, and I checked to make sure it is tight. I wont be able to remove the battery terminal until later since I'm at the college right now. I hope it'll clear away after I reset it. I hate having a CEL even if it's something stupid like this EVAP problem. It would "hide" another code if I got one..
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Post by ragek23 » Thu Mar 26, 2009 4:21 pm

get a scanner if you are worried about more codes poping up. I got one for 70 off ebay. Clears codes and takes live data.

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danman132x
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Post by danman132x » Fri Mar 27, 2009 2:38 pm

Well I pulled the battery and it cleared the code. I haven't driven yet, but i let it idle for a few minutes. If it comes back, i'll just dig up my original gas cap and see if it changes anything.
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DoubtedNeon
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Post by DoubtedNeon » Tue Mar 31, 2009 1:23 pm

good luck!
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Post by danman132x » Tue Mar 31, 2009 1:44 pm

Been a few days and it hasn't come back yet. I checked the gas cap and cleaned it well, and the mating surface is good too. Maybe it was just loose. Thanks
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BlackRoseRacing
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Post by BlackRoseRacing » Wed Apr 01, 2009 5:31 am

The evap codes will clear themselves out without any worries.....
And most of the time those evap codes will pop on when your under 3/4 of a tank of gas.The hoses in back by the evap canister are known to rot and split causing evap leaks, gas caps are also known to cause the code also....
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danman132x
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Post by danman132x » Mon Apr 20, 2009 1:50 pm

Damn my code came back. I'm going to drive a while with it on to see if it clears, bu i'm also going to check all my hoses for splits or cracks.
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Post by Sabersoul » Wed Apr 22, 2009 5:49 pm

Also try replacing the NVLD. That fixed it for me. Was throwing P0441, then it changed to P0440. LSP suggested it to me, so I figured I'd pass it along. It's located behind the right rear wheel, PN is 4891427AB. MSRP $45.05 and takes about 10 minutes to change out.

danman132x
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Post by danman132x » Wed Apr 22, 2009 5:56 pm

Alright thanks. Today the code went away on it's own while driving, so I dunno.
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Sabersoul
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Post by Sabersoul » Thu Apr 23, 2009 12:23 am

That's how mine started. Intermittently off and on and then it just stayed on. I had a guy come out and replace the purge solenoid, that didn't fix it, but finally replaced the NVLD and it's off.

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Post by benzsxt » Sat Apr 25, 2009 4:01 pm

Mine has done it for about 4.5 years. I have a scan tool so I just clear it. I looked at the canister and everything looks fine. I think i need a gas cap

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Post by Hudson_Neon » Thu Jul 16, 2009 3:44 pm

an EVAP issue that i've noticed on a lot of chryslers is that the gasket on the gas cap dries out, cracks, and leaks. i had bought a locking gas cap and this happened to me. luckly, there was a caravan sitting out in the junk cars with a good gasket

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Post by Danteneon » Thu Jul 16, 2009 4:12 pm

And so you know, locking gas caps have a much shorter lifespan when it comes to sealing. We have replaced many of them because they won't pass the cap seal test. Most of the locking caps in question were only 1 or 2 years old.
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neonslg09
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Post by neonslg09 » Fri Oct 09, 2009 10:56 am

I have had this code for 6 days. Hasn't gone away. Should I worry?

danman132x
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Post by danman132x » Fri Oct 09, 2009 11:22 am

It's not going to kill your car. I just pull the fuel pump fuse to clear it whenever it comes. Mine did a P0441 last time, but I reset it, and hasn't been back in about a month. I'm still using my locking gas cap though
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neonslg09
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Post by neonslg09 » Fri Oct 09, 2009 11:35 am

I just have the normal gas cap.

Hmmm, I'll unhook the battery and see if it comes back.

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Post by neonslg09 » Sun Nov 29, 2009 2:11 pm

I'm still getting this code. And I'm noticeing my gas mileage going down by 20 miles or so a tank. Suggestions?

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