I don't know if this was unplugged before I yanked out the airbox to check on something, but it's unconnected now.

Can someone tell me where it should connect? I'm trying to get rid of a P0172 issue.

 

Looks like one of the vacuum lines on your turbo control valve. Hard to tell which. One goes to the wastegate actuator, one to the turbo compressor, and one the inlet.

Check out the downloadable instructions IPD has to see which one it is exactly. I can't tell from the picture exactly. Can you get one a little more zoomed out if I am wrong?

IPD Heavy Duty Turbo Control Valve (HD TCV) - 850 S70 V70 C70

 

by the looks of this image, I'd say the hose is the port pointing to the right. I'll try to get a better photo tonight.

 

I looked around again tonight, and I found the bare nipple after the MAF that I had read about before but never quite saw. I guess I had to look at the right angle or look with my hands. Anyhow, with the hose connected, my turbo is back! I knew that I wasn't dreaming that the whoosh of the turbo was missing and that my power was gone.

The hose feels like it needs replacing. It's super easy to access, so I might as well. Does anyone know the diameter of the hose or a part number?

Well, if that would also have solved my P0172 issue, then it'd be a grand slam! Sadly the CEL came on during my test drive just now.

 

hmm, although the car drove great last night, and I was happy to feel the turbo again, I checked my OBDII, and it had the P0172 along with P0300, P0301, P0303, P0305, which are all misfire codes! Does this hose not go to that nipple after the MAF? I was just reading and some people say their nipple is capped ...

 

here's a zoomed out shot. the hose comes from the bottom. I plugged it into the nipple behind the MAF in the photo.