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P0451 Ford

P0451 Ford - Evaporative Emission Control System Pressure Sensor Range/Performance

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P0451 Ford Comments |  Add Comment
Possible causes
- Faulty Evaporative Emission System (EVAP) Pressure Sensor
- Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted
- Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
Help with Possible causes What does this mean?
Tech notes
There is a factory service bulletin for the following Ford models:

2005-2008 Ford Escape

Ford Factory Service Bulletin OBDII Code P0451

Help with Tech Notes What does this mean?
When is the code detected?
An improper voltage signal from EVAP control system pressure sensor is sent to Engine Control Module (ECM).
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0451 Ford Description

The Evaporative Emission System (EVAP) control system pressure sensor detects pressure in the purge line. The sensor output voltage to the Engine Control Module (ECM) increases as pressure increases. The EVAP control system pressure sensor is not used to control the engine system. It is used only for on board diagnosis.

P0451 Ford Information for specific Ford models
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FORD Technical Service Bulletins for P0451 code
2005 FORD ESCAPE Fuel System, Gasoline Details
2005 FORD ESCAPE HYBRID Fuel System, Gasoline Details
2006 FORD ESCAPE Fuel System, Gasoline Details
2007 FORD ESCAPE Fuel System, Gasoline Details
2008 FORD ESCAPE Fuel System, Gasoline Details
More Bulletins Help with Technical Service Bulletins What does this mean?
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