Look at the seal around the base of the filler neck. Could be dry-rotted and cracked.

 

Thanks K-Dawg ill check it out late this afternoon, its just tooo dang hot and humid outside right now... i really appreciate it

 

OK found no hoses off, the connection at the filler tube seems to be good as well. So i guess the next thing i should do is probably replace the Evap Canister Vent Valve for $20. And if that dont work then replace the fuel tank pressure sensor -but i dont find a pressure sensor online - is there one on this model?

Does that sound like the way to go about this?

 

I have the same code. Dealer said it was seal where the fuel pump is attached to tank and quoted me $900 to fix. Blew it off, reset the light every now and again.

 

Wow thats alot of money...

I was told to replace the vent solenoid first, if the light did not go out then change the purge solenoid next, then if same issue replace the leak detection pump itself. If that didnt fix it then it could be anywhere, a small hole in a hose, a rotten hose where the hose clamp meets the rubber, a leaky canister, fuel pump seal, or even nothing at all (false reading)

So i could not afford the dealership fee after i paid the bills so i just crawled under there by the canisters and grabed some stuff and moved it around gently by hand. The next morning the light went out.

Im sure it will prob come on again sometime but for now its good. I also found out that if its a bad leak as it says, then you should smell fuel at some point.

 

P0455 DODGE - EVAP System Large Leak

Read more: https://www.engine-codes.com/p0455_dodge.html

Older after market caps can easily cause a small system leak, but don't rule it out

https://www.youtube.com/watch?v=4WIVhfwMFHE

https://www.youtube.com/watch?v=Yq2burT2SiY

 

Wish i had a smoke machine

 

Was reading thru some forums about how other folks did with same p0455 CEL large leak & it just so happens I've been wanting to buy a smoke machine for a while for this exact issue. 100 bucks is a bit pricey for me although I've seen a few for cheaper but not cheap enough. So..... I took two Cresco disposable vaporizers from my local dispensary flared one side of one larger and the other smaller. Crimped the metal tube just enough to block a couple springs I jammed into one side to work as the worst filter ever and connected a length of hose to each end after the two were stuck together. Smoke machine finished! Lit a cigarette put it filter side against "filter" slid other tube over cigarette til the two tubes were pressed together making one & blow. Puffing helps sometimes if it's going out or not smoking well but for pennies made my own rig job smoke machine. Could hook compressor or whatever instead of blowing into it.
Best of luck to all who see this thread
End P0455

 

i GOT A WARNING FOR 2 SECONDS TO CHECK MY GAUGES, THEN THE TRUCK IMMEDIATLY SHUT OFF. lUCKILY i WAS DRIVING SLOW. i KNEW i HAD PUT A QUART OF WRONG WEIGHT OIL IN IT, BUT ON THE WAY TO GET AN OIL CHANGE, SAME THING HAPPENED. gOT 4 DIFFERENT CODES 150 MILES AWAY AT o'rILEYS. SORRY FOR CAPS. They said check after oil change. On the way, got same check guage and engine shut off again. Any clues. Just happy I wasn't in the mountains when this happened.