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

Subaru Legacy BN/BS (2015-2019) Service Manual / Fuel injection (fuel systems)(h4do) / Front oxygen (a f) sensor / Removal

1. Disconnect the ground terminal from battery sensor. NOTE

2. Lift up the vehicle.

3. Remove the under cover. Front Under Cover > REMOVAL

4. Disconnect the front oxygen (A/F) sensor connector, and remove the clip holding the front oxygen (A/F) sensor harness.

(A)

Front oxygen (A/F) sensor connector

(B)

Rear oxygen sensor connector

(C)

Clip

5. Lower the vehicle.

6. Apply spray-type lubricant (004301003) or equivalent to the threaded portion of front oxygen (A/F) sensor, and leave it for one minute or more.

7. Remove the front oxygen (A/F) sensor.

CAUTION:

When removing the front oxygen (A/F) sensor, wait until exhaust pipe cools, otherwise it will damage the exhaust pipe.

1. Check that the front oxygen (A/F) sensor has no deformation, cracks or other damages.2. Measure the resistance between front oxygen (A/F) sensor terminals.Terminal No.Standard1 and 22.0+0.42 &minus ...

Other materials:

Procedure
1. Check of the fuel amount↓2. Inspection of starter motor circuit Diagnostics for Engine Starting Failure > STARTER MOTOR CIRCUIT↓3. Inspection of ECM power supply and ground line Diagnostics for Engine Starting Failure > CHECK POWER SUPPLY AND GROUND LINE OF ENGINE CONTROL MODULE (ECM) ...