Pulled this data from the DTC B-codes and sorted.

XK SRS/Airbag Codes
(Number indicates number of blinks, for instance, 13 is seen as a single flash followed by a pause, then three successive flashes, often repeated several times)

13 - Crash data memory full
16 - Pass seat weight sensor CAN fault
17 - Pass spatial sensor CAN fault
18 - Pass airbag deactivate lamp circuit fault
19 - Airbag circuit status fault – driver
21 - Airbag circuit status fault – pass
22 - Side Airbag circuit fault – driver
23 - Side Airbag circuit fault – pass
33 - Seat Belt Pretension fault – driver
34 - Seat Belt Pretension fault – pass
42 - Impact sensor circuit fault – front
43 - Impact sensor circuit fault – driver side
44 - Impact sensor circuit fault – pass side
51 - Seat belt switch circuit fault – driver
52 - Seat belt switch circuit fault – pass
53 - Airbag audible warning circuit fault
54 - RCM configuration failure

 

Great find, I was always wondering what these meant. I cleaned it up a bit, and will add it to the FAQ section.

 

Thanks for the clean up -- looked good on my screen until I did the submit.