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pyrodak
*GenIII*
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6/24/2002
16:32:37

Subject: Check engine code P0442
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Hey All,
I went to AutoZone (very nice staff!!) and checked my check engine trouble light. Their scanner said that it was code "P0442: Evap leak monitor, Small Leak Detected." The guy at AutoZone suggested I change my fuel cap. I did that and the light went away....for about 150 miles. Now it is back. Does anybody have any other ideas on what it could be? Again, any help would be greatly appreciated!!
Later,

Mark S.
98 Club Cab 4X2 SLT 3.9


Dan Gruber
GenIII
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6/25/2002
01:13:55

RE: Check engine code P0442
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My truck has kicked that code at me twice in the past month...roughly 5000 miles between each incident (I had a cross country drive inbetween the two). I went to the dealer today to get a new gas cap. The parts guy suggested that I have it checked out since it's still under warranty. The only thing that I can figure is that the seal on the gas cap isn't sealing right after going through the expand/contract cycle of heat and cold...both times the codes came up were just after cold starts in the morning 2 days after refueling. The parts guy said they have a machine that will test the system to see what's leaking.

My appointment is Thursday morning and I'll post whatever the dealer says.

Say it with Krylon!
Dan
2000 CC SLT 4.7 4X4 Auto 3.92 LSD
3 inch Performance Accesories lift & 32 inch BFG MT KM's

Dan Gruber
GenIII
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6/27/2002
15:58:48

RE: Check engine code P0442
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Just got back from the dealer. New gas cap, $9. My original gas cap had a rattle in it that sounded like lots of tiny pieces of broken plastic. The new one doesn't. And the new cap has a different seal...two rings of soft rubber as opposed to a single hard rubber ring. I think my problem is solved.

Say it with Krylon!
Dan
2000 CC SLT 4.7 4X4 Auto 3.92 LSD
3 inch Performance Accesories lift & 32 inch BFG MT KM's

2001SLT_CC_V8
Dodge Dakota
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8/18/2003
12:11:29

RE: Check engine code P0442
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Same thing on my 01. Got a new cap. No new codes!!! Thanks Dodgedakotas.com!



ZenDak
Dodge Dakota
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8/28/2003
08:09:10

RE: Check engine code P0442
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Whew,,,got the P0442 code this morning... Thanks Dodgedakotas.com!!!! Was getting worried.



bman42
Dodge Dakota
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8/28/2003
08:32:36

RE: Check engine code P0442
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check out the small "tank" under the drivers side also. has 2 hoses that run to it from the fuel tank. if those hoses are leaking or are not tight, that may trip the light too.



ZenDak
Dodge Dakota
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8/28/2003
11:03:01

RE: Check engine code P0442
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Thanks for the tip Bman42! I'll be sure to do so,,,. What is that 'small tank' for anyway?,,I don't think I've noticed it before.

Graci!



bman42
Dodge Dakota
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8/28/2003
11:16:35

RE: Check engine code P0442
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I'm not 100% sure what the tank is for. Something with fuel system pressure or fuel vapor or something. Thats why the gas cap seals are critical now. Not sure of the "whys" tho. I rebuilt a wrecked 2001 QC and that small tank (its on a bracket under there somewhere) got smacked when the truck was wrecked and cracked one of the barbed hose fittings, causing a leak. I got the P0443 or something code for a gross leak. May want to inspect those hoses and maybe consider hose clamping the ends where they attach. I think your code is for a small leak. May be harder to pinpoint. Good luck!



azf100
Dodge Dakota
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8/28/2003
17:43:19

RE: Check engine code P0442
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The "small tank" is called a charcoal canister. It absorbs fuel fumes when the truck is sitting or idleing and sends them to the motor to be burned off.



KingR
Dodge Dakota
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9/29/2003
12:56:17

RE: Check engine code P0442
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Is there a way to reset the check engine light. After changing my gas cap my light is still on, Is there a way to turn it off and see if it comes back on.
Thanks



dkr8611
Dodge Dakota
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9/29/2003
16:25:09

RE: Check engine code P0442
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Disconnect the negative terminal on battery and hold the key in the start position for 20-30 seconds. Reconnect battery.



Izzy
Dodge Dakota
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7/05/2005
08:58:27

RE: Check engine code P0442
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I have reset my P0442 engine code 3 times now in the last 2 weeks. I have had to replace my gas cap 3 times now in its 106k miles. My gas cap now is new and I am still getting the P0442 code again. I did not know much about that li'l tank but will go check it and its hoses out now. Thanks.



mbowens
Dodge Dakota
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10/02/2005
09:19:45

RE: Check engine code P0442
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Put a new gas cap on my 2001 QC and the 0442 code has come bach twice. It is on now. I will check the small tank today.



jody
Dodge Dakota
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1/31/2007
20:24:48

miss fire detececte cyl 3 &4
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i just bought a 2000 dakota 4x4 v6 magnum and now i got a code so i did a tune up new 02 sensors and #3 &4 inj;s what could i be missing help



marcus Bowens
Dodge Dakota
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1/31/2007
22:39:25

RE: Check engine code P0442
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Check the hoses on the canister on the drivers side under the truck. The rubber part that pushes on the canister will crack. I have a new set of hoses but haven't put them on yet. Took some electrical tape and wrapped the rubber ends and pushed them back on and no codes for the last 40000 miles.



yup
Dodge Dakota
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2/01/2007
00:31:18

RE: Check engine code P0442
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those hoses suck,going through the firewall happened to mine as well as the canister.



eddy
Dodge Dakota
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2/01/2007
15:58:15

RE: Check engine code P0442
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0441 is gas cap. 0442 could be sometimes but usually isn't. It's a leak that's bigger than one caused by the cap but still not huge. I had it, went through three gas caps at autozone's suggestion, getting the code reset each time but having it come back on about 50-100 miles later. The dealer diagnosed it as the charcoal canister. Once they replaced that the code never came back again. Check the canister and the lines going into it.



Kowalski
GenIII
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2/02/2007
08:26:19

RE: Check engine code P0442
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Jody - it would be advisable to start a new thread with your problem; as the guys who are responding are giving info only relevant to the original thread. What did you replace when you did the tune up ?

Lead, follow, or get out of the way

Ron
Dodge Dakota
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6/11/2007
17:45:37

RE: Check engine code P0442
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My check engine light on my 2003 durango has been on for almost a year,I read about the charcoal tank above,checked it out and it had a cracked hose where it meets the fitting,I cut off 1/2 inch of hose,slid it back on the fitting,disconnected the negative battery terminal to reset the code,it has'nt come back on since,plus now I hear a schh sound when I take off the gas cap,which I didn't hear before I did this.



PETE
Dodge Dakota
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6/11/2007
22:09:56

RE: Check engine code P0442
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Hey pyrodak check my post on V-6 boards I wrote check your hoses going to your EVAP purge solenoid espically the little one of the two might be split on the bottom side like my 02' was common problem I'm seeing. Yours should be located by the lower battery tray like most? could be somewhere else check there first that might be tripping MIL Lamp code, if hoses are by purge solenoid are good, continue check the whole length of both and then check the hoses by the canister under rail drivers side same procedure as above if no problem under 8yr. 80,000 miles take to dealer free to fix FEDREAL MANDATED WARRANTY FIX. Don'tlet them tellyou NO! Its not covered. Hopefully if you bought your truck new or used they left manual and the rest info.there for you if so one of pamplets explain FEDREAL EMISSON MANDATED WARRANTIES and show the advisor still have problems call the 800 or 866 toll free number they will get you through. Good Luck...



mvbowens
Dodge Dakota
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6/11/2007
23:27:10

RE: Check engine code P0442
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Check the hose going to the canister under the truck on the drivers side rail. The hose end will crack up and leak. I bought a new hose assembly for $27, havent put it on yet because I wrapped the end up with electrical tape and the light hasnt come on yet.



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