E92 n43 bank 2 sensor 2

[Hallion]

Hello all. I'm new here so please go easy on me!

Would anybody be able to help me? I have a 2007 BMW E92 N43 (4 cylinder) 320i and have received a fault code stating BANK 2 SENSOR 2 is stuck rich. Can anybody tell me exactly where this sensor is on the car, ie. where after the CAT and where the plug is?

Pictures would be a great help if at all possible.

Thanks a million!