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P0456 Diagnostic Trouble Code Discussion for March 2007

EVAP System Small Leak

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Trouble Ticket Help Requests for DTC P0456
Help Request Posted
2003 Ford Expedition XLT 5.4L MIL Lamp on VIN: 1FMPU16L23
P0456: Evap small leak detected. ... talked with the customer about the possiblility of the fuel cap not being well secured. Check fuel cap seal and fit -looked okay, cleard code and let it go. Customer returned about a week later same code P0456. Checked system with smoke machine and was una...
March 27, 2007