My S70 was in a collision of moderate severity recently. The front was\ncrumpled slightly, but there was no evident engine damage. After the\naccident, the check engine light came on, and the following diagnostic\ncodes were read:\n\n541 Evap. valve\n616 Cannister valve\n447 Control valve Air Pump\n212 Front O2 sensor signal\n521 Front 02 heating\n153 Rear O2 signal\n522 Rear O2 heating\n223 A/C pressure sensor signal\n\nThe engine appears to run normally, but the A/C is not working.\nHow could a collision cause all of these components to fail? Could it\nbe that the wiring is damaged? How should the repair process proceed?