Tech Tips 92006-2014 Vehicles with 2.0T Gasoline Engine - N75 Solenoid Valve Diagnosis):
When diagnosis on the above engine leads to the testing of the N75, please refer this document with graphical aid. The diagram shows which vacuum ports on the N75 valve should hold vacuum and which ones should not.
Turbocharger fault codes P0299 and P0234 can be diagnosed using this test.
