P0455 Help

Low_Kota · Jul 8, 2009

P0455 (M) Evap Leak Monitor Large Leak Detected A large leak has been detected in the evaporative sysem.

Any ideas on what this could be or how to fix it? I installed a set of headers and a 48mm TB about 400 miles ago and this code popped up today

devilsdodge · Jul 8, 2009

i got the --------po442 the other day which is a medium leak in the evap system.i havnt looked to far into it yet but it's driving me nuts.

GWhaley · Jul 8, 2009

Check the rubber hoses that run to the canister under the cab........

Primus · Jul 8, 2009

Check your evap control motor near the canister. Had that fail back in April after buying it over month before.:rant: Or check the hoses under the canister, those tend be a common issue with these.

Grouned · Jul 8, 2009

when ever i get that code it's a gas cap not sealed right try that.

dualdakota02 · Jul 8, 2009

yah i had 2 codes for evap one was that one.... i changed the U hoses on the canister and changed the gas cap and poof problem solved.
the dealer had a 2 hose kit for the canister. they couldn't find it under the normal parts list but it was on one screen on there computer as an alert if someone wants just the U hoses. worth a shot

Low_Kota · Jul 8, 2009

Turned out to be the gas cap..... Thanks for the help!

DakOnFire · Jul 24, 2009

i love the search button.... throwing the P0455 code. im gonna go try the gas cap and check the hoses.

hotrodbob38 · Jul 27, 2009

above is what worked for me..U shaped hose..
its a 5/8 peice. I went to the local store and go the thickest 5/8 they had..now is all good..
buy about a foot for $2..you prob only need 8-9 inches..
Bob

DakOnFire · Aug 3, 2009

had the check engine light for about a week and then it just went off. tightened the gas cap after i read this but didnt do anything. idk, a week later its gone and im happy

2002Patriot · Aug 5, 2009

DakOnFire said:
had the check engine light for about a week and then it just went off. tightened the gas cap after i read this but didnt do anything. idk, a week later its gone and im happy

That would definately be from a loose gas cap. The EVAP leak test isn't performed all the time so it usually takes a few days for the system to clear the code.

oreoacid · Aug 5, 2009

jw...
what year did they start putting the gas cap sensors in?

any one know?

pete315 · Oct 3, 2009

where is this cannister? I have a 03 5.9 Durango. I want to check the rubber hoses. thanks

hotrodbob38 · Oct 4, 2009

under the frame rail, drivers side..right by drivers door

mr.mopar440 · Oct 5, 2009

Look on the under side of your hood. There should be a diagram with all of the emissions systems. Check that and all of the corresponding hoses.

P0455 Help

Low_Kota

devilsdodge

GWhaley

Primus

Grouned

dualdakota02

Low_Kota

DakOnFire

hotrodbob38

DakOnFire

2002Patriot

oreoacid

pete315

hotrodbob38

mr.mopar440

Top Contributors this Month

Recommended Communities