Subaru Legacy BN/BS (2015-2019) Service Manual: Inspection

Subaru Legacy BN/BS (2015-2019) Service Manual / Fuel injection (fuel systems)(h4do) / Rear oxygen sensor / Inspection

1. Check that the rear oxygen sensor has no deformation, cracks or other damages.

2. Measure the resistance between rear oxygen sensor terminals.

Terminal No.	Standard
1 and 2	5.6+1.7 −0.6 - (when 20°C (68°F))

Removal

1. Disconnect the ground terminal from battery sensor. NOTE2. Lift up the vehicle.3. Remove the under cover. Front Under Cover > REMOVAL4. Disconnect the rear oxygen sensor connector.(A)Front oxygen ...

Installation

CAUTION:If lubricant is spilt over the exhaust pipe, wipe it off with cloth to avoid emission of smoke or causing a fire.1. Before installing rear oxygen sensor, apply the anti-seize compound only to ...

Other materials:

Removal
WARNING:Place “NO OPEN FLAMES” signs near the working area.CAUTION:• Be careful not to spill fuel.• Catch the fuel from the tubes using a container or cloth.1. Release the fuel pressure. Fuel > PROCEDURE2. Drain fuel. Fuel > PROCEDURE3. Disconnect the ground terminal from b ...