P0299 underboost

Jodyjames

New member
Joined
May 21, 2020
Location
New Mexico USA
TDI
2010 Jetta 2.0
Bought car not running. DPF was plugged, deleted and installed 0.5 tune. Drove it for first time last night and no power, CEL, lots of black smoke. Obviously not making boost. P0299 came up, everything visually looks good on turbo, and hoses . Am I missing something. Decent mechanical knowledge but absolutely new to these cars.
 

redbarron55

Veteran Member
Joined
Jul 10, 2010
Location
Navarre, FL.
TDI
2012 Touareg TDI Executive
If I remember correctly the P0299 is the waste gate actuator on the turbo.
On the 2.0 TDI you can replace it without pulling the turbo, but you will have to work for it and bend a 10 mm wrench to fit.
There are some suggestions here about it.
Search is your friend, IIRC.
 

Will27

Well-known member
Joined
Jul 25, 2017
Location
New Zealand
TDI
'06 Golf TDI, '08 Caddy TDI, '13 Passat Alltrack
If you are happy you have no boost leaks and the vacuum lines are hooked up correctly, follow this video: https://www.youtube.com/watch?v=Nl66nCaOlI0
This is an excellent video from Richard, one of the members here on testing the vacuum side of the system to pinpoint where the problem is.
 
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