My S70 was in a collision of moderate severity recently. The front was crumpled slightly, but there was no evident engine damage. After the accident, the check engine light came on, and the following diagnostic codes were read: 541 Evap. valve 616 Cannister valve 447 Control valve Air Pump 212 Front O2 sensor signal 521 Front 02 heating 153 Rear O2 signal 522 Rear O2 heating 223 A/C pressure sensor signal The engine appears to run normally, but the A/C is not working. How could a collision cause all of these components to fail? Could it be that the wiring is damaged? How should the repair process proceed?