Forester AWD F4-2.5L DOHC (1998)
Barometric Pressure Sensor: Description and Operation
Description
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The Pressure Sensor is used in A/T vehicles. It is located in the Engine compartment at the front of the right-hand suspension. It consists of a
solenoid which switches between the atmospheric pressure and suction pressure lines and a pressure sensor. This arrangement allows either
pressure line to be monitored.
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A sensor output signal is sent to the Engine Control Module (ECM) to diagnose the Exhaust Gas Recirculation (EGR) system and Evaporative
Emission Control System.
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The Pressure Sensor is not used in M/T vehicles.
