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P0455 Diagnostic Trouble Code Discussion for December 2009

EVAP System Large Leak

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Trouble Ticket Help Requests for DTC P0455
Help Request Posted
2002 Nissan Pathfinder SE 3.5L MIL Lamp on, melted VIN: JN8DR09Y22
P0455: EVAP System Gross Leak Detected. ... customer needed to pass state inspection and had originally came in with p0455,and p1448.After hooking up evap system fogger it was bypassing vent solenoid so I quickly blocked vent solenoid to check rest of system before re...
December 04, 2009
2004 Saturn L300-1 2.2L MIL Lamp on VIN: 1G8JC54F24
P0455: EVAP System Large Leak (0.080") Detected. car came in with p0455. checked gas cap and was tight. code stored in history not pending. sealed system with scanner and watched fuel tank pressure drop and hold. thought they left gas cap loose and shipped car. told them if light came back on would have to t...
December 09, 2009
2003 Dodge Grand Caravan Sport 3.8L MIL Lamp on
P0455: EVAP System Large Leak (0.080") Detected. ... pretty good understanding of how these evap system work.The leak detection pump will pressurize the system and determine the size of the leak by the amount of time it takes to return to the contact points as the piston bottoms out. I have had pretty good l...
December 23, 2009
1999 BMW 328i 2.8L MIL Lamp on VIN: WBAAM533XX
P0455: large leak. First thing we did was replace the gas cap and re-test and it still fails. I've performed a smokoe test as per TSB and it pushes the smoke out of what appears to be the DTML pump intake/exhaust vent immediately. None of my sources explain whether it is normal ...
December 28, 2009