I have a 1996 850R with P0172 error. I checked Google usenet archive and found that this is usually the vacuum hose behind the power steering pump. I looked and it is indeed the vacuum hose behind the power steering pump.
The problem is I took the vehicle to the Volvo dealer, showed the parts guy the broken vacuum hose, and he doesn't know what part it is. He thinks I should have the service department fix it. Does anyone who had this problem know what part number this hose is? Why can't the Volvo dealer parts guy (!) tell what part it is after seeing it in my car?
Thanks.
-JW