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P0455 Diagnostic Trouble Code Discussion for October 2011

EVAP System Large Leak

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Trouble Ticket Help Requests for DTC P0455
Help Request Posted
2001 Ford F-350 Super Duty Lariat 6.8L MIL Lamp on VIN: 1FTWW33S51
P0455: evap large leak code. I need a question answered on this super duty, According to the customer this truck has had evap problems for years. I have checked and double checked everything several times. The purge control valve was replaced because it was slow to pull a vacuum on system...
October 21, 2011