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

Subaru Legacy BN/BS (2015-2019) Service Manual / Fuel injection (fuel systems)(h4do) / Front oxygen (a f) sensor / 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 front oxygen (A/F) sensor, apply anti-seize compound only to the threaded portion of front oxygen (A/F) sensor to make the next removal easier.

CAUTION:

Never apply anti-seize compound to the protector of front oxygen (A/F) sensor.

Anti-seize compound:

NEVER-SEEZ NSN, JET LUBE SS-30 or equivalent

2. Install the front oxygen (A/F) sensor.

Tightening torque:

21 N·m (2.1 kgf-m, 15.5 ft-lb)

3. Lift up the vehicle.

4. Connect the front oxygen (A/F) sensor connector, and secure the front oxygen (A/F) sensor harness by using the clip.

(A)

Front oxygen (A/F) sensor connector

(B)

Rear oxygen sensor connector

(C)

Clip

5. Install the under cover. Front Under Cover > INSTALLATION

6. Lower the vehicle.

7. Connect the ground terminal to battery sensor. NOTE

Inspection

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 ...

Fuel delivery and evaporation lines

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