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P0455 Diagnostic Trouble Code Discussion for January 2011

EVAP System Large Leak

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Trouble Ticket Help Requests for DTC P0455
Help Request Posted
2002 Dodge Durango SLT 4.7L MIL Lamp on VIN: 1B4HR38N82
P0455: EVAP System Large Leak (0.080") Detected. I've got this durango i don't understand. It has been here 3 times and the evap codes all come back.i unplugged the purge and disconnected the vac source at the purge and grounded the white/green wire on the ldp and started the engine.when i smoke the system i...
January 17, 2011
2000 Dodge Dakota 4.7L Poor Fuel Economy VIN: 1B7GG2AN9Y
P0455: EVAP System Large Leak (0.080") Detected. ... economy on average of 220 mi per tank. Scanned checked for codes. Had EVAP System code P0455 Large leak. Smoke tested system and no vissible leaks found. Performed service bay test on Evap system; checked out good. Fuel pressure good 48psi. Made sure truck...
January 18, 2011
2003 Saab 9-5 Linear 2.3L MIL Lamp on VIN: YS3EB49E03
P0455: . wtf... we got a used ecu from a wrecker and programed it. idle seems worse. misfire codes set at idle as before thanks in advance to anyone who's seen this or can give us a direction to blindly follow!?
January 28, 2011