Fuel Tank Pressure Sensor

The scan tool range -17.5 to 7.5 inches H2O (-33 to 14 mmHg) / 0 to 5 volts. This parameter indicates the fuel tank pressure sensor input to the PCM. The PCM uses the signal to determine the fuel tank pressure. The PCM uses the fuel tank pressure sensor input to determine the status of the EVAP system diagnostics.