Most likely you have a wiring issue in the passenger side airbag circuit. I attached the test for this DTC. It appears you will need some specific tools in order to test this properly. Do not attempt this if you don't have this tool because you could inadvertently deploy the airbags as you are testing the wiring to the inflator.
If you don't have access to these tools, then I personally would not attempt this repair.
Images (Click to enlarge)
Wednesday, April 24th, 2019 AT 5:46 PM