P0457 FORD - EVAP Control System Leak Detected (Fuel Filler Cap Loose/Off)
EVAP control system has a very large leak such as fuel filler cap fell off, EVAP control system does not operate properly.
Vehicles that meet enhanced evaporative requirements utilize a
vacuum-based evaporative system integrity check. The evap system
integrity check uses a Fuel Tank Pressure Transducer (FTPT), a Canister
Vent Solenoid (CVS) and Fuel Level Input (FLI) along with the Vapor
Management Valve (VMV) or Electric Vapor Management Valve (EVMV) to find
0.040" diameter or larger evap system leaks. Federal vehicles can
utilize a 0.040" leak check rather than the 0.020" leak check required
for California vehicles (click over pic for zoom).
Symptoms:
- Engine Light ON (or Service Engine Soon Warning Light)
- Possible a noticeable fuel odor caused by the release of fuel vapors
Possible causes:
- Missing fuel filler cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
Possible solution:
- Retight or replaced fuel tank filler cap
Tech notes:
It is a very common problem with Ford vehicles. There are service bulletins for the following vehciles:
1997-2000 Ford CONTOUR
1997-2002 Ford ESCORT
1997-2003 Ford CROWN VICTORIA, MUSTANG, TAURUS
1998-2003 Ford ESCORT ZX2
2000-2003 Ford FOCUS
2002-2003 Ford THUNDERBIRD
1997 F-250 Ford HD
1997-1999 Ford Ford F-250 LD
1997-2003 Ford E SERIES, EXPEDITION, EXPLORER, F-150, RANGER, WINDSTAR
1999-2003 Ford F SUPER DUTY
2000-2003 Ford EXCURSION
2001-2003 Ford ESCAPE, EXPLORER SPORT TRAC, EXPLORER SPORT
Also, in this link could check this
Ford Bulletin.
Hope helps (remember to rate and comment this answer).
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