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

Subaru Legacy BN/BS (2015-2019) Service Manual / Fuel injection (fuel systems)(h6do) / 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+0.8 −0.6 - (when 20°C (68°F))

Removal

1. Disconnect the ground terminal from battery sensor. NOTE2. Lift up the vehicle.3. Remove the front exhaust pipe. Front Exhaust Pipe > REMOVAL4. Apply spray-type lubricant (004301003) or equivalen ...

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
NOTE:Before conducting this procedure, drain the engine oil completely.1. Remove the engine from vehicle. Engine Assembly > REMOVAL2. Remove the crank pulley. Crank Pulley > REMOVAL3. Remove the chain cover. Chain Cover > REMOVAL4. Remove the timing chain assembly. Timing Chain Assembly > REMOVA ...