Ive a b7 rs4 and recently had a miltek exhust and sports cats fitted (sounds amazing but) , ive replaced all the lambada sensors with new ones also but im still getting engine warning light faults and ive run VCDS and this is whats comimg up.
Is this common and does anyone know of a soloution?

Address 11: Engine II Labels: 079-910-560-BNS2.lbl
Part No SW: 8E1 910 560 HW: 8E1 907 560
Component: 4.2L V8/4V FSI ª0080
Revision: --H15--- Serial number: XXXXXXXXXXXXXX
Coding: 010C0003180F0160
Shop #: WSC 01286 386 08256
****1 Fault Found:
000080 - Oxygen (Lambda) Sensor B2 S1: Heating Circuit: Malfunction / Open Circuit
P0050 - 004 - No Signal/Communication - MIL ON
Freeze Frame:
Fault Status: 11100100
Fault Priority: 0
Fault Frequency: 98
Mileage: 82028 km
Time Indication: 0
Freeze Frame:
RPM: 755 /min
Load: 20.4 %
Speed: 0.0 km/h
Temperature: 78.0°C
Temperature: 36.0°C
Absolute Pres.: 1010.0 mbar
Voltage: 13.716 V
thanks guys