The amber light showing a fault on my airbag is constantly showing. How to reset on 2000 Jaguar XJ8

For some time now, my car is showing a constant amber warning light for the airbag. Is this likely to be real fault or a fault on the circuitry? If it is the latter, how can I reset it?

Asked by for the 2000 Jaguar XJ8
Can not reset: If all system were good, the light would not be on.
1 more answer
scan test for codes, could be a bad crash sensor or wiring going to it