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3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
I have an 03 ram 2500 5.7.I keep getting code p0456(evap leak monitor 0.020 leak detected) when i reach half a tank of gas.I replaced the gas cap thinking that might be it but of course it wasn't. Anyone have any ideas what i should look for?
Have you checked the rubber hoses that go into your evap canister underneath the bottom of the truck near the fuel tank?
Check the hoses for dry rot.
Replace if necessary.
If you can't get the dealer part hoses, just use vacuum hose with hose clips. Cheap and easy fix.
Al.