I was driving the 850 the other day on a short trip (40 miles) when I noticed that the Check Engine light was on. When I got home and checked out the codes with a OBDII Code Reader the PO410 code came up which is Secondary Air Injection System Malfunction. Has anyone had this problem and if so what did you do to solve it. I really don't know what they are talking about. Any information would be helpful and if I have to take it to the Volvo Dealer at least I will know what they are talking about. Thanks....VolvoLarry
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