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P0457 Diagnostic Trouble Code Discussion for October 2009

Loose Fuel Cap

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Trouble Ticket Help Requests for DTC P0457
Help Request Posted
2007 Jeep Wrangler Unlimited Sahara 3.8L MIL Lamp on VIN: 1J4GB39187
P0457: Loose Fuel Cap. This jeep sets the gas cap light every time you start the vehicle. I have smoke tested the entire system, I am not finding any leaks. I found the Evap monitor was bad, I replaced, it still sets the code every time the key is turned on. Please help
October 22, 2009