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P0455 Diagnostic Trouble Code Discussion for June 2011

EVAP System Large Leak

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Trouble Ticket Help Requests for DTC P0455
Help Request Posted
2003 Dodge Caravan SE 3.3L MIL Lamp on, Evap system VIN: 1D4GP25R83
P0455: EVAP System Large Leak Detected. This has been an ongoing problem. Has been looked over many times. We replaced the leak detection pump and gas cap. We have smoked the system 3 times. The purge valve holds vacuum and releases (ok). Checked the vent valve which is not serviceable. Remove the c...
June 03, 2011
2004 Nissan Frontier XE 3.3L Excessive Emissions, Poor Idle Quality, MIL Lamp on VIN: 1GDJ7H1P7R
P0455: EVAP System Gross Leak Detected. ... the time to help me with my request. I have a customer whose truck needed inspection and emissions. I ran the emission test and it showed DTCs that are listed, p0455, p1402, p1448, and p0441. First we asked us to just replace his vent valve and clear the l...
June 20, 2011