My truck recently stalled while driving about 30 mph. it was maybe 3 minutes after it started. Now cranks but won't start. Had codes 12,31 and 45. I disconnected battery and all codes are off now. Exchanged asd and a/c relays, checked wiring and hoses only visually, cranks solid just will not start. Both battery terminals were rather lose, I could twist by hand and the previously not working radio now works. Any ideas. Thanks

Check for corrosion not only around the terminal, but the cable to under the coating of it.