2003 Volvo V40 - Car Stalls When Idle /at a red light/ error codes

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My 2003 V40 (with 96K miles) recently stalled at a red light and I was unable to restart it (the engine will turn over then stall when you try to start it). The auto repair shop told me that it had the following error codes: P2401 P0508 P0031 P0037 P0505 P0245 P0445 The repairman installed a new idle air control valve. However, the car still will not start. What else should be done to get the car running again? Thank you very much!!! Note: the car also has a new battery and new timing belt that had been installed a couple of months ago.