As per previous post, but... disconnect the starter battery first -both terminals and wait for at least 15 mins to allow the capacitors to discharge. ( If any airbag accidentally discharges from a short circuit, you will need to replace the whole wiring harness, as well as the airbag(s)).
Check the bright orange plug under the dash is properly connected as suggested. There are also plugs under both front seats* -it's worth inspecting these as well. Reconnect the battery...
* the plug under the driver's seat has also been occasionally reported to trip a fault from being disturbed by constant back/forth adjustment of the seat
MY99 RR P38 HSE 4.6 (Thor) gone (to Tasmania)
2020 Subaru Impreza S ('SWMBO's Express' )
2023 Ineos Grenadier Trialmaster (diesel)
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