Fuel Tank Pressure Sensor: Description and Operation

Fuel Tank Pressure (FTP) Sensor:

The Fuel Tank Pressure (FTP) sensor:
^ monitors the pressure levels in the fuel tank.
^ communicates the pressure reading to the PCM during the OBD II leak test.

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.