first thing is dont read faults off the initial state tab . read off the delivery tab clear all codes and see which come back then click on vehicle communications and read each module which shows fault to drilldown on cause its possible your srs fault has been caused by a flat battery condition and its left a marker which can only be removed with a visit to a crash module specialist. cost is usually abt £70 have you had any flat battery conditions? try a known good battery and check if the alternator is charging volvos hate low voltage situations most of your codes will flag up with low voltages
