Manifold Absolute Pressure Sensor: Removal

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

Fig 1: Disconnecting Ground Cable From Battery
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 Filter Assembly And Manifold Absolute Pressure Sensor Connector
Courtesy of SUBARU OF AMERICA, INC.