Subaru Legacy BN/BS (2015-2019) Service Manual: Removal
1. Disconnect the ground terminal from battery sensor. NOTE 2. Lift up the vehicle. 3. Remove the front exhaust pipe. Front Exhaust Pipe > REMOVAL 4. Apply spray-type lubricant (004301003) or equivalent to the threaded portion of rear oxygen sensor, and leave it for one minute or more. 5. Remove the rear oxygen sensor. CAUTION: When removing the rear oxygen sensor, wait until exhaust pipe cools, otherwise it will damage the exhaust pipe.
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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.Standard1 and 25.6+0.8 −0.6 - (when 20 ...
Other materials:
Fuel system trouble in general inspection
TroublePossible causeCorrective actionInsufficient fuel supply to fuel injectora. Fuel pump does not operate. Defective terminal contactInspect contact, especially ground, and tighten it securely. Trouble in electromagnetic or electronic circuit partsReplace the faulty parts.b. Decline of fue ...
