I have 2016 Pan4, I just got error $ engine light on due to O2 sensor bank 2 sensor 1, and O2 Sensor ahead of bank 2 conv. dynamics. It is the passenger side, before the coverter? I don't think I can do it. I just had left shoulder surgery, I need to bing the car to Indy or muffler shop, I am in San Jose bay area? any recommendations? Should I replace all 4? Many Thanks for pointing where the sensor is and recommendation.

 

You don't need to replace all sensor, only a bad.

 

I have my Indy replace the O2 sensor and transmission mount. The car runs GREAT now. Very Happy ...
happy Holidays.

 

Happy for you

 

Does anybody knows if fault P0056 - no signal/communication for sensor 2 ( downstream, after catalyst converter ) triggers Check Engine light ?

So on which side, passenger or driver sensor was replaced ? Only one ?