Boost pressure sensor location? Cr 170 tdi common rail


Registered User
Hi guys,

I bought a dtuk tuning kit for my 2010 cr 170 quattro, but I can't find the Boost pressure sensor which I need to plug this dtuk into?

It's a 4 pin plug, I can see one between the alternator and the Boost pipe connecting to the throttle body, but it's behind some hard line ac pipes and is inaccessible, also it doesn't feed into the boost pipe so I don't think that's the correct sensor.

Any help appreciated, lots of googling and a3 Facebook group noobs were not helpful...