Exhaust Side

Disconnect the ground cable from battery.
Lift up the vehicle.
Remove the under cover. <Ref. to REMOVAL , Front Under Cover.>
Remove the clip holding the engine harness. (Left side only)

Fig 1: Locating Engine Harness Clip
Courtesy of SUBARU OF AMERICA, INC.
Disconnect connector (A) from the camshaft position sensor, and remove the camshaft position sensor from under the cylinder head.

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.