Removal and Installation: Preparations

Fig 1: Identifying Heated Oxygen Sensor (HO2S) Connectors

Courtesy of VOLVO CARS OF NORTH AMERICA.

Switch off the ignition.

Remove the air cleaner (ACL) housing.

Detach the inlet hose between the air cleaner (ACL) and the turbocharger (TC) from the turbocharger (TC).

Open the catches and disconnect both the connectors for the heated oxygen sensors (HO2S).