Subaru Legacy BN/BS (2015-2019) Service Manual: Front oxygen (a f) sensor

Installation

1. Install the engine coolant temperature sensor, and connect the connector to the engine coolant temperature sensor.NOTE:Use a new gasket.Tightening torque:22 N·m (2.2 kgf-m, 16.2 ft-lb)2. Con ...

Removal

1. Disconnect the ground terminal from battery sensor. NOTE2. Lift up the vehicle.3. Disconnect the connector (A) of the front oxygen (A/F) sensor.4. Remove the clip (B) securing the front oxygen (A/ ...

Other materials:

Inspection
• Inspect the drive plate facing for wear and damage.• Driven plate for discoloration (burned color)• Make sure the snap ring is not worn and the return spring has no permanent distortion, damage, or deformation.• Check the lip seal for damage.• Inspect the extension en ...