Oxygen Sensor Replacement

[rickman]

replaced o2 sensor left bank #2(sensor after cat).Code was Po141.Replaced sensor ,cleared code fault and after 40 kilometres the serve engine light came back on.Any suggestions would be appreciated. Thanks Rick

[gmtech4]

there is NO warranty on electrical parts,sorry for your luck,get the veh diag.d properly and stop throwing money at it

[Z'06]

replaced o2 sensor left bank #2(sensor after cat).Code was Po141.Replaced sensor ,cleared code fault and after 40 kilometres the serve engine light came back on.Any suggestions would be appreciated. Thanks Rick

 

Your options:

 

1) Keep replacing it.

2) Install spark plug defoulers (spacers) on both rear O2 sensors to lift them out a little, away from the full blast of exhaust.

3) Delete the rear O2 sensors in a PCM tune.

[ColoradoSkiCountry]

If you have to have your vehicle emission tested in your state/county do NOT remove your O2 sensor(s) or they will fail the vehicle. It is possible you got a bad new sensor. I'd replace it again (warranty) and if it does it AGAIN, then time to get her into the mechanic who has the tools to diagnose the thing.