LEAK CHECK P SENSOR (EVAP LEAK CHECK PRESSURE SENSOR, in. Hg, kPa)
WARNING: This page is about a different car, the 2006 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
This parameter indicates the pressure in the EVAP system.
It's equal to the barometric pressure while EVAP vent valve control is OFF (valve open).
When EVAP leak check module operates, the pressure indicates EVAP system pressure.