Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
The P0455 is a common code since it will set if the gas cap is loose or missing. Start by tightening the gas cap and clearing the code. In most cases, the code can be clear by disconnecting the car battery for about 30 minutes.
There is a factory service bulletin for the following Ford vehicles:
1997-2000 Ford Contour
1997-2002 Ford Escort
1997-2003 Ford Crown Victoria
1997-2003 Ford Mustang
1997-2003 Ford Taurus
1998-2003 Ford Escort ZX2
2000-2003 Ford Focus
2002-2003 Ford Thunderbird
1997 Ford F-250 HD
1997-1999 Ford F-250 LD
1997-2003 Ford E Series
1997-2003 Ford Expedition
1997-2003 Ford Explorer
1997-2003 Ford F-150
1997-2003 Ford Ranger
1997-2003 Ford Windstar
1999-2003 Ford F Super Duty
2000-2003 Ford Excursion
2001-2003 Ford Escape
2001-2003 Ford Explorer Sport Trac
2001-2003 Ford Explorer Sport
Ford Factory Service Bulletin OBDII Code P0455
The cost of diagnosing the P0455 FORD code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
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.
The Diagnostic Trouble Code (DTC) will set when the EVAP control system has a very large leak such as the fuel filler cap fell off, the EVAP control system does not operate properly.
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