That's right. The problem is most likely a vacuum leak. I had the same code on my 95 850 turbo. What you need to check is the hose that goes from the main turbo intake hose to the air intake manifold. Where it goes into the intake manifold is right on the passenger side behind and next to the power steering pump. You will need a flashlight to see it. This is a very common place for the elbows to "blow out" from oil deterioration. To replace, just get the oem elbows from the dealership, buy some vacuum hose, then pull off both old connectors and put the new hose on with new elbows, rerouting around the front of the manifold and over the tranny. Hope this helps.

kevin