Passat limp mode

[Pastdi]

Hi im a newbie and have a question regarding limp mode.
No problems personally but my
2006 VW passat 2.0 TDI 140bhp BKP 120,000
goes into limp mode after driving for approx 25-30 miles. Around town is fine

Vag shows

Control Module Part Number: 03G 906 018 CD
Component and/or Version: R4 2.0l PPD1.5 G 9627
Software Coding: 0000072
Work Shop Code: WSC 00199

1 Fault Found:
16683 - Boost Pressure Regulation: Control Range Not Reached
P0299 - 006 - Short to Plus - Intermittent


Normally around town boost is fine.
Recently changed the manifold flap as was full of oil and two teeth were missing which blew fuse which also controlled air con. It did this before I changed the flap so the flap is not in the equation.

Has anybody any ideas would be much appreciated.

[kite]

From the Rosstech wiki


16683/P0299/000665 - Boost Pressure Regulation: Control Range Not Reached
Possible Symptoms
Reduced Power Output
Limp Mode
Possible Causes
Hoses/Pipes incorrect connected, disconnected or leaking
Charger Pressure Control defective
Possible Solutions
Check Hoses/Pipes to/between Components
Check / Clean / Replace Charge Pressure Control
Special Notes
When found in 2.0l TFSI:
Check Boost Pressure Control Valve (N249), for cracked rubber diaphragm. A new/optimized Valve is available under Part # 06F-145-710-G (or newer), see TPI 2016331 for details.

[martin1810]

Check all the big air pipes from turbo to intercooler and back for leaks. Then check the vacuum pipes for a leak. Have you got the solenoid box on your car. It's the one with a bunch of pipes coming out by the bulk head. That's the next place to look.

[Pastdi]

Thanks for the info.