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P0457 Diagnostic Trouble Code Discussion for April 2008

Loose Fuel Cap

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Trouble Ticket Help Requests for DTC P0457
Help Request Posted
2000 Mercury Grand Marquis LS 4.6L MIL Lamp on VIN: 2MEFM75W9Y
P0457: evap sys very small leak. ... came on three months ago. scanned comp. and found p0443 and p0457. ran a koeo test and p0443 comes right back. so i ohmed out the solenoid and had 35.2 ohms.disconnected comp. and ohmed from there and have the same reading. i installed a 10 ohm resistor an...
April 22, 2008