Sentra XE L4-1597cc 1.6L DOHC MFI (GA16DE) (1997)
Absolute Pressure Sensor: Description and Operation
The absolute pressure sensor is connected to the MAR/BARO switch solenoid valve by a hose. The sensor detects ambient barometric pressure and
intake manifold pressure and sends the voltage signal to the ECM. As the pressure increases, the voltage rises. The absolute pressure sensor is not used
to control the engine system.