Hi,
It's generally not a good idea to mix and match airbags and other safety components from different vehicles, as they may not be compatible with each other and could potentially cause problems with the airbag system.
In this case, it sounds like the crash sensor or "ecu" you are using is from a different model of car and has a different software code. This could be causing the issue with the deployed airbags error. It's possible that using this "ecu" could cause problems with the airbag system and potentially compromise the safety of the vehicle.
I would recommend using the correct airbags and other safety components for your specific vehicle, as this will help ensure that the airbag system functions properly and provides the necessary protection in the event of an accident. If you are unsure about which parts to use, it's best to consult a mechanic or specialist who is familiar with these systems and can advise you on the appropriate parts for your specific vehicle.