adarshn Posted December 1, 2014 Report Share Posted December 1, 2014 Can anyone tell me when to replace the oxygen sensor in car? Link to comment Share on other sites More sharing options...
vw_itis Posted December 12, 2014 Report Share Posted December 12, 2014 If any of these things you are facing, it means oxygen sensor needs to be replaced: 1. Vehicle's Mileage is gone extremely low 2, OBD II code in the car 3. Smog Test Failure Link to comment Share on other sites More sharing options...
ghassank Posted April 17, 2015 Report Share Posted April 17, 2015 I believe that the mechanic will tell you if the sensor needs to be replaced when you have regular annual check. This is the best way to find out. Link to comment Share on other sites More sharing options...
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