Fuel Tank Pressure

The scan tool displays -17.5 to +7.5 in. H20 or -32.7 to +14.0 mmHg. Fuel Tank Pressure is used extensively for [1][2]EVAP purge control and EVAP system diagnostics.

The scan tool displays 0 to 5 volts. Fuel Tank Pressure is used extensively for [1][2]EVAP purge control and EVAP system diagnostics.