Exhaust Side

Disconnect the ground cable from battery.

Fig 1: Disconnecting Ground Cable From Battery
Courtesy of SUBARU OF AMERICA, INC.
Lift up the vehicle.
Remove the under cover. Refer to FRONT UNDER COVER .
Disconnect the connector from the camshaft position sensor, and remove the camshaft position sensor.

RH side

Fig 2: Locating Camshaft Position Sensor Connector (RH Side)
Courtesy of SUBARU OF AMERICA, INC.
LH side

Fig 3: Locating Camshaft Position Sensor Connector (LH Side)
Courtesy of SUBARU OF AMERICA, INC.