Need help! 02 s80 2.9 non turbo
 

I have an 02 s80 with some issues. It starts and runs for about 7 seconds of sitting for awhile. Won't start after it dies. Had random misfire 300 code. Also 301,302,305. And a p0432 bank 2 sensor insufficient. All new coils, then all new plugs. No change. So is there anything I can do to diagnose this thing?