My 850 Turbo does not have the power it use to it is like the turbo is not working, I checked the fault codes and with the test lead in socket A2 I got code 4-4-3, this code is not in my lame Hayns manual.

I check socket A6 and I get nothing?

Is there somthing that controles the turbo boost that might have gone out?

If so, where is it and is it hard to change?

Thanks, Mark

the wastgate is controlled by vacume, there is a hose that connects to the wastgate diaphragm that controls it, you may have a vacume leak

disconnect the vacuum hose of the wastegate controller , and go for a ride dont push to hard on the throttle pedal , you'll see if youre problem is the wastegate controller , but remember this is just for a test , don' t let the hose disconected forever , because you're going to become a member of connectingrod .com