Fuel Tank Pressure Sensor: Description and Operation

Evaporative Emission System

Evaporative Emission System - Duratec Engine:

Duratec Engine

Evaporative Emission System - Zetec Engine:

Zetec Engine

Principles of Operation

Fuel Tank Pressure (FTP) Sensor
The fuel tank pressure sensor is used to measure the fuel tank pressure during the Evaporative Emissions monitor test. It is also used to control excessive fuel tank pressures by forcing the EVAP system to purge. The fuel tank pressure sensor is tank-mounted.