🦧 Ford Focus 1.6 Ti Vct Problems

I have got a spesific problem. My car is Ford Focus 2 (new shape) HB 1.6 Petrol. My engine is 1.6L Duratec-16V Ti-VCT 115Ps This engine has a 4 lambda (oxygen) sensor. If u want i can give my VIN Number. My lambda sensor still not working. This sensor is bank1 sensor 2. Picture below can u say me which one is bank 1 sensor 2? .

ford focus 1.6 ti vct problems