After my Cat Converter had collapsed I had it replaced and all was good, then the emissions light came on. Scanned the car and VCDS kicked up an error with the emissions... I suspected it was a sensor and my suspicions were confirmed when the car sailed through its MOT.
Have just scanned the car again and 2 faults have appeared:
17441 - Sensor for Nox (G295): Signal too Low
P1033 - 002 - Lower Limit Exceeded - MIL ON
18528 - Post-Catalyst Oxygen (Lambda) Sensor Correction; Bank 1: Too Lean
P2096 - 002 - Lower Limit Exceeded - MIL ON
So I'm guessing the sensors need to be replaced? How much would I be looking at?