VW Golf 7 turbo underboost problem LIMP P029900

non return valve 046905291b

[OleksandrVakhlis]

Bless you, while checking this valve found that pipe is disconnected 👍

[yngddeu]

Same problem. It happens in long-distance drives, and I have to turn the engine off and on again, and the error will be gone. I had the non-return valve changed. BTW I got MK7 1.6 tdi

[jorgefernandez]

Tengo este mismo codigo en un Superb, la valvula parece trabajar en buen estado, podria estar dañada de igual manera?

[rick]

"Here is problem" absolutely fn useless

[Banker.xXxXxX]

bei mir PO299 ladedruckregelung regelgrenze unterschritten. Was könnte das sein??? 170000km notlauf nur bei leichten steigerung auf der Autobahn 120-140 tempo. Innenstadt kann mann 200km/h fahren alles top. Bitte um eine Antwort

[newdimension]

2.0tdi E288 when the car is warmed up and when accelerating in 3rd gear mostly i get an P00299. when the car is shut down for a few minutes the error resets on its own.this error is intermittent. sometimes i can drive for a long time before it happens and sometimes it happens after 20 min of driving. i changed underboost regulator and the other thingy that regulates it also changed one way valve on the vacum hose. today im going to try and see if i can find something what might be causing it.

[Banker.xXxXxX]

how do you know that that was the problem and not n75??

[bogdanch]

I also have this error only when it's very hot outside. I checked the valve with a vacuum pump and it holds the vacuum. Was your valve still closing?