P80 front wheel bearing question?

[DimBor22]

Hello Forum I have a Volvo 1999 V70, I can not pass the Smock Check, and I cannot reset the Oxygen Sensor I drove to many times does not work, Can somebody tell me the easy way to reset the Oxygen sensor

Regard DimBor

[scot850]

On a 99 V70 most OBD2 sensors should be able to reset the O2 sensor light. However, check what the code is. If it has filed it will come back on. In that case you need to replace the O2 sensors. Normally the upstream (front sensor) is the one that fails, but makes sense to swap the rear as well. AutoZone or the likes used to offer a scan for codes for free. If they do, make note of the code. It will likely be something like P0XXXX.

Neil