2.0T TSI Diverter Valve (DV) Failure (P2099)

April 22, 2015
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VW | Audi 2.0t TSI Diverter Valve (DV) HERE

Diverter Valve for 2.0t

 

Diverter Valve (DV) on TSI

The diverter valve or turbo recirculation valve is a crucial part of the turbo system.  Its job is to relieve boost in between shifts or when you let of the gas.  This part most commonly fails due to tearing of the diaphragm.  The original version of this VW and Audi DV used a rubber diaphragm over time this would tear causing a turbo boost leak.  There later was a revision to this part changing from a diaphragm style to a composite piston.  The piston style DV (often called Rev D) has no part to tear making this a better more reliable part.  This part is often referred to as the Rev D valve as when the VW/Audi part number was revised, the new number had a D at the end.

 

 

While some TSI engines did come with the newer revision of this diverter valve the earlier models did not.  We suspect that starting in 2008 TSI engines up to somewhere in 2010-2011 range, most 2.0T TSI engine were fitted with the original diaphragm style DV. Find the Latest Revision of the 2.0T DV Here

 

dv article-

 

If your DV has gone bad you may experience loss of power, or possibly a fault codes like P0299 (Boost Pressure Regulation: Control Range Not Reached) and P0033 (Turbocharger Bypass Valve Control Circuit: Malfunction / Open Circuit).  If you have this fault you should inspect your DV to see if you have the old diaphragm style and if it’s torn.

 

The DV on the 2.0T TSI engine is located at the bottom of the turbo (picture below taken from the passenger wheel well) and must be accessed from under the vehicle.  You can see the part from under the vehicle looking up and the back of the engine.  It will have 3 allen bolts mounting it to the turbo.  Take a look here for a DIY on How to Replace your 2.0T TSI Diverter Valve

2.0T Diverter Valve Location

 

Make sure you have the latest version of this Diverter Valve to be sure that your turbo is providing the boost you need.

Paul Barrett

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20 Comments

on 2.0T TSI Diverter Valve (DV) Failure (P2099).
  1. James Lewis
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    Thanks for your information. Will be buying a new 2016 Jetta GLI-SEL, Manuel 6-Speed,
    3GEN, Mk6 platform later this year. I believe the 2016 has the new version DV. I have seen the one used on this car and it has a hard plastic housing? It was recommended that i replace this component with a sturdier DV made by Forge Motorsport, because the housing or Valve itself is made of an Aluminum Billet? Additionally, i am upgrading the stock performance with an APR Stage 2 ECU Chip, which includes an APR Downpipe and Carbonio Stage 2 Cold intake kit, plus an APR INTERCOOLER Kit.

    Would the DV from Forge be a necessary upgrade given a Significant increase in HP and Torque? (225 to 262hp and 236ftlbs to 321lbsTQ) ALSO, what would you Suggest I Also upgrade on the engine? Or is there a component that is a MORE of a Necessity than a better DV? Just trying to Understand how to avoid OTHER engine components going Sour because of the increased power/Strain? For Example, due the increased HP/Torque, many Mk6 3GEN MT6 owners were experiencing Clutch Slippage with a Stage One Tune? And definitely with a stage 2, therefore, upgrading the clutch assembly was a Necessity (the preferred upgrade was to South Bend Daily II full clutch Kit)

    THANKS for your ADVICE!

    JAMES

    • Paul Barrett
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      The stock piston style DVs generally hold up pretty well to power. In regards to the other parts holding up it generally remains to be seen what other components would be vulnerable on newer models. Clutches are often one of those parts due to the large increase in power. This often depends on driving style.

  2. Bill W
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    2012 EOS 2.0 turbo valve has been replaced by dealer with new!! Sometimesthe car just runs exremely well (accelerator pedalresponse) other times lags behind an I dont hear the valve dumping?? Ideas because it really runs well when it does thanks for your time and response..Bill

    • Paul Barrett
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      Tough to say. Sounds like you will need to bring to it to a VW specialist to have them diagnose whats going on

  3. Matt Lindsey
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    Experiencing sluggish take off on a 2012 Volkswagen CC 2.0T. just bought from a reputable dealership in my area. they said to run 93 octane in it and see if that has any effect on it. it did not. only way i can think or a comparison is if you give your standard transmission not enough gas or not enough clutch or combination of those. Thank you in advance sir!

    • Paul Barrett
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      Tough to say you should have the vehicle looked at.

  4. Misan
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    My VW Passat 2.0T has sluggish movement across all gears, I really have to rev high to get it moving, any leads or advice will be really appreciated. Thanks.

    • Paul Barrett
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      Sounds like you need to check the faults to dive into this further. What you are describing could be a diverter valve issue but it also could be a ton of other things.

  5. Misan
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    UPDATE TO PREVIOUS COMMENT OR OBSERVATION:
    I noticed the car lacks the power to go over a reasonably high speed-bump especially when the car attempts to go over it at really low speed. I also noticed it struggles at a U-turn if attempted at slow speed, but does the U-turn a bit better if I move faster. So I wonder why I have to floor the throttle whenever I need reasonable speed.

  6. Redza
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    Basically the fault code will appear once it detects the DV is not working well is it? Or we can detect it earlier when we encounter power loss?

    • Paul Barrett
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      These faults are directly related to the car not seeing the boost level requested by the computer.

  7. jac
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    thanks in anticipations i have a 2010 tsi Passat cc with some noise coming from the left side of the engine when ever am trying to accelerate like some kinda 0f air licks, causing low acceleration, had it diagnose its came up with fault code like P0299,P0420,P0491, pls am new with vw can i get any advice on whats going ,

    • Paul Barrett
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      tough to say for sure, sounds like it could be a bad diverter valve though.

  8. Steve
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    2012 tiguan had a p0299 code as read by my mechanic. He said it was the turbo boost sensor. Said he tested the sensor and it failed. Is this the same part or a different animal. Thanks! BTW Love this site! Your videos have already saved me hundreds!

    • Paul Barrett
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      Awesome glad we could help. We can save you on parts too FYI ; ).

  9. |

    So my 2.0T FSI started to blow white smoke out the exhaust and the Cars not boosting. I also get a high pitch siren sound upon acceleration. So i replaced the PCV valve, Rev D DV, and new spark plugs. Still the problem is still there except the siren sound. Any ideas? Thank you for your time.

  10. Ruhan
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    Ive replaces ignition coil for cylinder 4 and all of my spark plugs yesterday in my 2009 cc. I started the car this morning and my check engine light was blinking then remained steady after it warmed 3 the codes are still saying today that cylinder 4 is misfiring. Im lost.

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