B1927/78 Short to GND in Rear Passenger Side Pretensioner Squib Circuit
Its a problem with your right rear seat belt assembly. Codes like this often come up after an accident because the pretensioner has deployed. It wont be covered under warranty. Call your insurance company and let them know youre taking your car in for inspection for possible accident related damages. Once they diagnose the problem, they can send the findings to your insurance. If it was related, they should reopen the claim and cover it.