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jeremy
Dodge Dakota
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3/30/2005
13:00:08

Subject: check engine code p0455
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My check engine light came on yesterday. I figured out it was message p0455, which is a large evaporatioin emmision control system leak. I read that usually that means you left your gas cap off. I checked the gas cap and it seems fine. Do i need to reset the code or is it possible there is something else going on. I did recently change the oil about 3 days before the light came on. thanks for the help

Jeremy



?
Dodge Dakota
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3/31/2005
08:58:25

RE: check engine code p0455
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If light has ' reset ' you are ok !
If not = may need to replace gas cap .
Even though it "looks " ok - may still leak
which causes that code ..
Always make sure cap is tight after fill-up..



BrandonG
GenIII
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4/01/2005
11:09:49

RE: check engine code p0455
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Jeremy,
I've reset my code twice and it keeps coming back...i've done the same...checked cap and any fuel likes and listened for any leaks and i've come up with nothing...My truck is throwin the same code...2000 3.9

TIA-
BrandonG

jeremy
Dodge Dakota
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4/01/2005
13:35:30

RE: check engine code p0455
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thanks for the help. mine is also a 2000 3.9. The light went off after 3 days and the gas cap seemed tight when first checked. hopefully that did it





Doug
Dodge Dakota
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4/01/2005
21:39:49

RE: check engine code p0455
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You all should check your fuel filler hose in front of the wheel well on the bed. Mine rusted out and developed a hole right by where it connected to the cap assembly. High enough to not leak fuel or "smell" but large enough to throw a code.



Al
Dodge Dakota
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4/03/2005
11:14:58

RE: check engine code p0455
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Here's the fix. Take off the gas cap and spray carb cleaner in the vent orifice. There is sometimes a build of emission that causes the valve not to close. It work for me.



Chris
Dodge Dakota
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2/17/2006
22:28:57

RE: check engine code p0455
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After letting car cool......
Check hoses to and from Charcoal canister also known as "EVAP Canister"

One hose goes from the gas tank to emmission control center under your car next to the catalitic converter, if this line broke off there could inly your prob.





TuckerLdlow
Dodge Dakota
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2/20/2006
15:28:17

RE: check engine code p0455
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Don't forget to check your vacuum hoses, too. I had a split in one of mine recently that was causing that code. Trip to Advance and $1 worth of tubing solved it.



ObieWonDakota
Dodge Dakota
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2/21/2006
14:09:47

RE: check engine code p0455
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Just because the gas cap seems tight doesn't necessarily mean it is. Mine "clicked" and seemed to seal tight but after changing to an aftermarket one (not from the dealer), code stayed away after reset.



randy
Dodge Dakota
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2/25/2006
16:05:36

RE: check engine code
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How do I pull codes from my 99 4x4 and where can I find code # reference.



HerrHarry
Dodge Dakota
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7/24/2008
11:37:00

RE: check engine code p0455
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I had this problem. First I got code PO442, then later when I didn't fix it I got the additional code PO455. I checked the rubber lines that run to the charcoal cannister and in the middle of that line there was a "T" that either side of the line was pushed onto. The rubber line had split on the end, so I cut the split end off and put it back - the error went away after awhile. Then, the error came back and when I checked the line it was split again. I think this rubber line isn't pliable enough to stand the stretching that occurs when it's pushed onto the "T". I got new line at the auto parts store to replace it.



J and J Auto
GenII
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7/25/2008
00:20:22

RE: check engine code p0455
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If all else fails change the evap sensor they
do go bad, not to offten but it does happen

There is a slight vac in the system the sensor
reads that and if there is no vac it will trip
the code

Gas cap first suspect replace it
hose's next canistor rarly leaks
than sensor

The system vents threw the charcoal to keep any
gases from getting into the air

Larry
J&J Auto

Problem Child
GenII
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7/25/2008
20:12:02

RE: check engine code p0455
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Later versions of this truck are bad for the line splitting going into the canister (Driver's side, in front of gas tank, large hose with elbow) Check that first, don't go worrying about sensors.



Russel Smith
Dodge Dakota
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8/25/2010
17:15:11

RE: check engine code p0455
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My Check engine light keeps coming on at 1/4 of a tank for the P0455 error. I have a 2003 Dodge Caravan, just bought at Auction. I have it reset when I fill it up and without fail it goes on again at a 1/4 tank. I can't get it to pass emissions here in CA because 6 weeks ago a law was passed saying that your car can only fail at 1 thing instead of two. So any suggestions on what it could be I just replaced the gas cap last night to see if that keeps it from coming on.




Gerards Dodge
Dodge Dakota
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10/04/2012
01:39:00

RE: check engine code p0455
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I have Dodge Dakota 2002 it has 32k miles. I change the oil to get
it ready for smog but when i started the engine the check engine
light when on. It did fail the smog and the test result came back as
P0455. My wife used my truck she put gas and didn't put the gas
cap properly. Im thinking of changing the gas cap and or changing
the evap sensor like what Larry from J and J auto advice to do. If in
case it work, do you think different problem will arise? How much
do you think ill spend with the new evap sensor and or reseting the
engine light.
Please help. Thank you



Kevin Nadeau
Dodge Dakota
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5/08/2014
16:30:13

RE: check engine code p0455
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Message:
Spend no money on resetting the engine light. Check
if gas cap is old (get a new one) Check under wheel
well by gas spout. No leaks? Might just be the
sensor if the engine light it back on after you
complete this step: Disconnect both leads to
battery. Wait a minute, reconnect them. If
everything is good (chances are it was the gas cap)
The engine light will be off. Make sure you hear
some clicks when you had cranked on the new gas cap.
Goodluck.



brent
Dodge Dakota
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11/04/2014
04:15:35

RE: check engine code p0455
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I know on my 2000 Dakota with the 4.7 you can turn the key
over and back to the off position three times and it will display
the fault codes, if any, where the odometer reading is
displayed. Then, when you feel you have fixed the problem,
disconnect the negative wire from your battery, turn your key
over for 30 seconds and then turn the key to off position and
that will clear your codes. Not an answer to your issue , but
figured it to be good info and possibly save you a dollar or
two.I'm gonna go kill some deer now. Audios




brent
Dodge Dakota
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11/04/2014
04:17:48

RE: check engine code p0455
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Message:
I know on my 2000 Dakota with the 4.7 you can turn the key
over and back to the off position three times and it will display
the fault codes, if any, where the odometer reading is
displayed. Then, when you feel you have fixed the problem,
disconnect the negative wire from your battery, turn your key
over for 30 seconds and then turn the key to off position and
that will clear your codes. Not an answer to your issue , but
figured it to be good info and possibly save you a dollar or
two.I'm gonna go kill some deer now. Audios




brasco
Dodge Dakota
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4/22/2015
19:07:33

RE: check engine code p0455
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I have a 2002 dakota r/t 5.9L and I'm getting a
code po455 how do I get rid of it so I can get my
truck in for an Etest?



Matt
Dodge Dakota
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2/09/2016
21:31:40

RE: check engine code p0455
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Will the check engine light trun off after the problem is fixed?



Ron Johnson
Dodge Dakota
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6/26/2017
14:52:45

RE: check engine code p0455
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I have bad news for anybody with a 2001 dodge Dakota 4.7 engine SLT 4 door quad cab with a plastic fuel tank.The tank has a white plastic part that has 2 ea. elbows.This is bonded to the black plastic tank.Alcohol in the fuel attacks this part and caused hairline cracks which can leak as you put fuel in. this will give you a 455 code. bad thing is these tanks are no longer available from Dodge or anywhere else.So I went to wrecking yards and found plenty but since the tanks have no drains the workers punch holes in them to drain the gas. since the part I need can't be removed from the tank I am screwed



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