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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Other materials:

System alarm operation
The alarm system will give the following alarms when triggered. The vehicle's horn will sound for 30 seconds. The hazard warning flashers will flash for 30 seconds. If any of the doors (or the rear gate/trunk lid) remains open after the 30-second period, the horn will con ...