HELP! Airbag light wiring issue

[Azzy28]

Hi, I wonder if anyone can help me.

I have a 2017 Audi a3 2.0 TDI that had a very minor bump to the passenger front corner. 
The airbag light came on and I have changed the sensors (both sensors in bonnet hinges and also 2 at front) it was showing but airbag light is still on. 
I have now found the cut wire but don’t know where this has come from, so I need a wiring diagram to possibly help me identify where it is from. 
I have attached a pic of the fault codes and also the cut wire.

Thanks in advance  

[Steve Q]

You might find that the airbag system can't just be reset from a regular code reader and might need to be done by an Audi independent specialist or Audi.