P0455 message questions

From : jmc

Q: 2001 dakota truck runs fine except its fuel usage could be better. check engine light throws code p0455. ok so i know p0455 means a large evaporative emissions leak. it used to be p0422 or whatever the small leak message is but has changed. i changed the gas cap code comes back. i still never get that little vacuum noise when i remove the gas cap. the receiver top seems to be plastic whats underneath looks a little rusted. could it be the cause of the error is this a user replaceable part in looking up the code it said to check the gas cap or inspect the evap system for cuts/holes in tubes/hoses you may hear a vacuum noise or smell fuel repair if necessary the inspection part sounds like something i could do myself if only i knew what i should be inspecting. is it possible for someone to tell me what i should be looking at/for or should i just take it to a mechanic and let them have at it what sort of costs am i looking at to repair this i was originally gonna wait till we got back to the us to get this fixed were already starting to pack! but now it looks like were going to remoteville in a country with no chryslers much less dodge. any help appreciated. guess id better go find myself a haynes manual jmc .

Replies:

From : joe

its usually a cracked hose coming out of the charcoal conister. the canister is located underneath the truck around the area where the drivers seat would be. take a look at those hose ends and make sure theyre not cracked. if they are cut off the end and re-install them. maybe use a hose clamp to keep them on night and tight. then re-set your pcm and that should work if its the problem. good luck. good luck! my daughters 01 dakota is showing the same code. if anybody is reading this where can i find a schematic of the evap system tia hank .

From : mac davis

on sun 5 feb 2006 214345 -0600 joe joepr1@covad.net wrote its usually a cracked hose coming out of the charcoal conister. the canister is located underneath the truck around the area where the drivers seat would be. take a look at those hose ends and make sure theyre not cracked. if they are cut off the end and re-install them. maybe use a hose clamp to keep them on night and tight. then re-set your pcm and that should work if its the problem. good luck. or a loose gas cap.. damhikt good luck! my daughters 01 dakota is showing the same code. if anybody is reading this where can i find a schematic of the evap system tia hank mac please remove splinters before emailing .

From : jmc

suddenly without warning mac davis exclaimed 06-feb-06 603 pm on sun 5 feb 2006 214345 -0600 joe joepr1@covad.net wrote its usually a cracked hose coming out of the charcoal conister. the canister is located underneath the truck around the area where the drivers seat would be. take a look at those hose ends and make sure theyre not cracked. if they are cut off the end and re-install them. maybe use a hose clamp to keep them on night and tight. then re-set your pcm and that should work if its the problem. good luck. or a loose gas cap.. damhikt nope thats been eliminated. ive replaced the gas cap and always make sure its on tight. unless theres some other way it can be loose that i dont know about... jmc .

From : jmc

suddenly without warning joe exclaimed 06-feb-06 343 am its usually a cracked hose coming out of the charcoal conister. the canister is located underneath the truck around the area where the drivers seat would be. take a look at those hose ends and make sure theyre not cracked. if they are cut off the end and re-install them. maybe use a hose clamp to keep them on night and tight. then re-set your pcm and that should work if its the problem. good luck. good luck! my daughters 01 dakota is showing the same code. if anybody is reading this where can i find a schematic of the evap system tia hank thanks. that seems easy enough for a non-mechanic to manage i fix computers not trucks usually. jmc .

From : Annonymous

joe writes its usually a cracked hose coming out of the charcoal conister. the canister is located underneath the truck around the area where the drivers seat would be. take a look at those hose ends and make sure theyre not cracked. if they are cut off the end and re-install them. maybe use a hose clamp to keep them on night and tight. then re-set your pcm and that should work if its the problem. good luck. i know it isnt my gas cap also. i bought a new one and even exchanged it. also made sure it was tight and right. i will check the canister hoses too. thanks hank .

From : Annonymous

good luck! my daughters 01 dakota is showing the same code. if anybody is reading this where can i find a schematic of the evap system tia hank .

From : me

just had the same code on my 2002 dodge ram 4.7 quadcab. replaced gas cap to no avail. took vehicle to the crooked dealer..oops the nice dealer...they ran an emissions test with the eeld machine applied smoke to find the leak and ended up tightening the fuel pump lock ring. test and fix was $149.54. wouldve been okay except they forgot to hook the connection back to the emissions purge valve solenoid so the vehicle started giving the p0443 code. they didnt notice the code change assumed it was still p0455 and told me they couldnt get rid of the leak so they recommended i replace the fuel tank at a cost of $900.00+. i self-diagnosed the p0443 after refusing to take their word found the problem plugged the power back to the emissions purge valve solenoid and the check engine light has cleared no problems no obd codes everything running fine. im tempted to inform the dealer of their ineptness. chiltons manual was very helpful! joe writes its usually a cracked hose coming out of the charcoal conister. the canister is located underneath the truck around the area where the drivers seat would be. take a look at those hose ends and make sure theyre not cracked. if they are cut off the end and re-install them. maybe use a hose clamp to keep them on night and tight. then re-set your pcm and that should work if its the problem. good luck. i know it isnt my gas cap also. i bought a new one and even exchanged it. also made sure it was tight and right. i will check the canister hoses too. thanks hank .