Manifold Absolute Pressure Sensor: Removal

Remove the collector cover.
Disconnect the ground cable from battery.

Fig 1: Disconnecting/Connecting Battery Ground Cable
Courtesy of SUBARU OF AMERICA, INC.
Disconnect the connector (A) from manifold absolute pressure sensor, and remove the filter assembly (B) from intake manifold.
Remove the manifold absolute pressure sensor from the solenoid valve bracket.

Fig 2: Identifying Manifold Absolute Pressure Sensor Connector And Filter Assembly
Courtesy of SUBARU OF AMERICA, INC.