Fuel Tank Pressure Sensor

This sensor monitors fuel vapor pressure in the fuel tank. The fuel tank pressure sensor converts fuel tank pressure into electrical signals and inputs the ECM. When fuel vapor pressure is higher than the set value of the EVAP two way valve, the valve opens and regulates the flow of fuel vapor to the EVAP carbon canister. The sensor is mounted in the engine compartment. See Figure . See Fig 1 .

Fig 1: Cutaway View Of Fuel Tank Pressure Sensor & Voltage Output Chart

Courtesy of AMERICAN HONDA MOTOR CO., INC.