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P0457 Diagnostic Trouble Code Discussion for June 2018

Loose Fuel Cap


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Trouble Ticket Help Requests for DTC P0457
Help Request Posted
2011 Ford Expedition EL Limited 5.4L Hesitation VIN: 1FMJK1K50B
P0457: evap large leak/cap off. ... customer wants to sell it but someone test drove it and said it has no power, news to the customer. first gear is okay but beyond quarter throttle it feels exactly like a clogged cat. i did a back pressure test, it passed not convinced i dropped both c...
June 12, 2018