Error Codes

Here are the codes from Volvo: http://volvospeed.com/vs_forum/index.php/topic/47502-dtc-information/ Here are the generic OBDII codes: http://www.obd-codes.com/trouble_codes/ I have a lot of experience with the 850 and it's check engine light issues, so if you post the codes I can give you a good idea as what to check. Let me know the history of codes and parts replaced if you can, plus any codes that are stored right now.