01 Outback Posted October 18, 2016 Share Posted October 18, 2016 HO2S Sensor 1 Bank1 Sensor is what the ad says the CEL is on for in a 03 outback with 3.0 6 cylinder...Can anyone enlighten me? The car is cheap at 2200 if that is an easy fix.. Link to comment Share on other sites More sharing options...
montana tom Posted October 18, 2016 Share Posted October 18, 2016 (edited) The price is right..... O/2 sensor is a common code to cause a check engine light to come on. Unfortunately there are many things that can cause that particular code. Changing the O/2 is basic enough but may not fix your problem. Check for posts on this forum about faulty O/2 codes po420 . For me, if the car is clean ,with reasonable mileage I would buy it. Edited October 18, 2016 by montana tom 1 Link to comment Share on other sites More sharing options...
potter2010 Posted October 19, 2016 Share Posted October 19, 2016 I replaced one on my 2001 a few years ago, was about $50 Canadian. Link to comment Share on other sites More sharing options...
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