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

Subaru Legacy BN/BS (2015-2019) Service Manual / Fuel injection (fuel systems)(h4do) / Front oxygen (a f) sensor / 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.	Standard
1 and 2	2.0+0.42 −0.2 - (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 front oxygen (A/F) sensor connector, and rem ...

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 ...

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