This Is Why Your Car Won’t Boost (Diverter Valve)

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P0299 underboost code how to check. common cause failure. how to check diverter valve DV revision J F K G H
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Tags: car not hitting boost p0299 code open circuit code how to check diverter valve volkswagen vw audi VAG Pierberg vs oem genuine boost leak test checks out no boost leak found diverter valve fail symptoms swap APR tuned unitronic cobb accessport dyna tune flash refresh ots map warranty td1flagged dealership volkswagen audi repair void warranty

[@MaximilianoGarduno]

I got a po299 could this be it?

[@jaymillns6574]

So my car struggles to accelerate unless I’m at or over 3000 rpm is this why then so I would need to replace this and issue resolved ??

[@allanj.p3663]

Are they supposed to fall apart?

[@isaaceyres6751]

I just got p0243 code, could this be it?

[@jajajajajaja867]

I took mines out and the blue seal feels like plastic, I also blew into it with my mouth over the plastic cap and I air was getting past it. Does that mean it’s failed as the seal isn’t sealing?

[@lucaernst4953]

Unplug ur map sensor too and check if u get a new code. If not , replace ur map sensor. Worked for me

[@kawifromkali]

Just swapped mine out. It was a revision C (2013 Audi A4). I inspected the O-Rings and they looked fine, and it felt like it actuated fine, but there was a tiny amount of oil in the electrical connector. Not sure if that indicated a bad DV, but, I went ahead and replaced it. Hopefully this fixes my P0299 code.

[@antoinecureton]

Did it fix it?

[@kawifromkali]

@@antoinecureton I don’t think it did. The light went away because it’s winter and cold but I think the turbo valve is bad.

[@thiagofiladelfo7992]

Pierburg reversion Dv or Gfb?? Looking for answers have a BT Mk5 loosing boost right at 2500/3k rpm before throttle

[@jaymillns6574]

Did you ever figure it out I’ve got the same problem on my seat Leon 1.4 tsi where it starts judering until I’m over 3000rpm

[@user-gx2hf7jf4u]

Replaced this sensor and notice there is a rip in the orange cone it that a big issue is driving it ok

[@benkohout6495]

Is d the latest version for the 2011 Audi a4 avant? Or J

[@JewelCity1]

Doubt a 2011 car would have the latest revision that a 2019+ car would have.

[@naythan31]

how can I test this valve can I put a 12 volt and see if its operating or not

[@mazpr2025]

Most sensors are either 5v or 12v, so I would start 5v to be safe.

[@Zakw17]

We’re you having hard shift behavior? It seems my car is letting the DV open for a split second during some shifts that’s possibly causing hard shifts per tuner. Might need to buy a new Rev

[@JewelCity1]

Car is 6 speed manual so throttle is off during shifts regardless. This was a short vid to show others what to potentially look for on their DV. (Latest 2 revisions)

[@theenglishtrucker1849]

I thought Revision G was the latest.

[@PHRebello]

Does anyone know how this piece is called in portuguese?😅

[@isaacdenomme9954]

i know they are called egr valves in things other than volkswagens and audis

[@stathi13]

Would there be any benefit to upgrade to an atmospheric BOV? Forge or Turbosmart in specific

[@superguygames4122]

just for sound. a Go Fast Bits DV+ would be the best in terms of an upgrade through.

[@JewelCity1]

Sounds much better/cooler but not the best performance wise. OEM seems to be the winner there.

[@stathi13]

@@JewelCity1 right on, thanks man

[@branddawg2376]

if u drive a dsg then a turbo smart wouldn’t be that much different in performance, if u have a manual car the oem diverter is def better because you don’t loose too much boost when shifting

[@dillonbuckley5063]

I have the full recirculating turbosmart. Works amazing, sounds absolutely completely bad ass

[@lowermichiganmudders9894]

My car in 4th gear and up when more then quarter throttle is applied or about 3600 rpm builds a lot of boost fast then seams to fall off? Got any ideas

[@JewelCity1]

Check for codes and log it during the next pull

[@hyper8545]

I go gfb dv+ with latest revision on top

[@adrianleon1731]

Any noticeable difference?

[@hyper8545]

@@adrianleon1731 boost holds better you can see it on the guage and the blow off sound is slightly louder but thats it. If you want oem+ type feel its ur best bet but if you want big blow off sound I'd go with the non dv styles that blow off to atmosphere or recurring hybrids. The gfb dv is also better construction meaning it will not break or tear like oem bottoms do.

[@hyper8545]

Recirculating *

[@adrianleon1731]

@@hyper8545 I had one before on my 2017 Jetta GLI. Aren’t you supposed to take them out to recoil the piston or no?

[@hyper8545]

@@adrianleon1731 idk never heard of that. I only touched mine once. It's been few years