How The 2.0T Diverter Valve Fails

Today we look at the failure of the 2.0t FSI Diverter Valve found on VW GTI, Passat, and Jetta. This is an easy DIY parts as well.
For full show notes visit the blog at, humblemechanic.com/?p=5595
Sponsor of today's show
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Join me today as we break down:
Why a Diverter Valve is not a Blow Off Valve
What is a Diverter Valve
Where is the Diverter Valve located
How the Diverter Valve works
How the Diverter Valve Fails
Symptoms of a failing Diverter Valve
Diagnosing a bad Diverter Valve
Can you DIY the Diverter Valve
Tips for replacing the Diverter Valve
The "Rev D" Diverter Valve
How to replace the Diverter Valve
Thanks To Apex Tuning for hooking me up with the parts
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[@gmctech]

Dude, from one Professioanl Technician to another I extend to you many many thanks yous. I have a 20 year old Passat 1.8T and a 2008 Jetta 2.0T FSI and whenever I VAG my rides and see an issue I always go straight to your channel... I gotta say both engines have been flawlessly running in reality... I got my 1.8T from a retired doctor in the city and she only had the VW dealership ever touch that car so it was squeaky clean inside the engine and I'm running Rotella T6 in it and it LOVES that oil... My 2.0 has had a few issues like this one here but it's been a rocket on wheels and never left me stranded. Both cars now have over 350,000km on both clocks and the run perfectly. I attribute a lot of their good vibes from being able to save sooooo much diagnostic time by going straight to your channel... again many thanks from up here in Canuckistan!!

[@ricardochaparro8678]

I replaced that valve in a customer vehicle and old one when I removed the connector was full of oil. Now still has same code point that valve again and car wont move fast , any suggestion ?

[@nicklang9913]

😮The 😮

[@556poor7]

I remember doing diverter valves and pcv valves all day when the 2.0T was released. At least they're easy cheap fixes.

[@calorcito4209]

😂

[@erixgarcia5166]

Oil cooler, and waterpump, all coolant hoses that connect to engine . Replace to steel or aluminum . What a ride thoe

[@davidfairchild1640]

Just installed a replacement diverter value on my wife's 2010 Passat wagon. The orange diaphragm was ripped badly. Went from low boost code and frequent stall outs on start up back to full boost and much smoother running overall. Thanks for the great video!

[@themachine8009]

How much is the valve plz?

[@joncountegan5782]

I wish I would have found this video months ago!!! Thank you for all your knowledge and experience

[@ronin4740]

Failed exactly as described. Glad I saw this video - saved me hundreds maybe thousands on this repair!

[@HumbleMechanic]

NICE!!! That is awesome. Feel free to tell all your friends HAHA... For real, glad to be able to help

[@baporapo5016]

Thanks for the video just replaced my diverter valve on my mkv 2008.5 gti had the valve with the red rubber just like the video. One of the easiest diys I have done thanks for all the info and videos!

[@fomocore]

Very experienced mechanic there. I'm always humbled

[@damaltheagaming2860]

I knew I should have came here first for advice. I tried googling based off my P2261 from my Ross-Tech logs, and had a hard time narrowing down what the failure meant. Now I know what tools I need, and what to look for when I finally get under the car. Thanks!

[@enemy2921]

I never had P0299 code but suspected my turbo diverter valve was damaged, and knew it was the old version of the part. When I took the old diverter valve off I suspected the rubber diaphragm would be torn like my PCV was. BUT it was fully in 3 pieces when I finally finessed it out. Glad I got that fixed its driving much smoother. Now to get those dirty valves cleaned...

[@cieraarchuleta9499]

Thank you.. This channel is a stress reliever..

[@shawnstylez3523]

Thank you for answering my question I do appreciate it, I love your videos keep doing what your doing you inspire me and many others also educate many VW enthusiast that are new or don't understand things quite well or how things work, but you make great points and breakdown things and show step by step as well working with destuche auto parts and i see your passion in the automotive world same as mine the love of cars, if it was tuned would you suggest a recirculating valve as well to hold boost or would it put more pressure on the turbo as well should I upgrade exhaust manifold and turbo or an stock Handle the fire spitting backfires

[@JoseGarcia-zi1tz]

Great info! Wife's '08 Eos just threw a P0299 code today. Glad to see the fix is relatively simple. Just a couple questions: how does oil get into that area? Is the turbo lubricated via the oil-pan? Just seems odd that oil would leak out of an intake area. Thanks.

[@TorranceMoreno92]

I always enjoy your videos.

[@HumbleMechanic]

TorranceMoreno92 Thank you :)

[@DONOChannel]

I took mine out today expecting it to be an older revision as I have a terrible boost leak. Was surprised when I took it off to see it was a revision D, which sucks as I wanted to see where it failed and can’t really tell.

[@finkleeinhorn2623]

I had to replace mine with the 'D' revision before getting my tune completed, due to how quickly the 'C' type (stock on my Mk5 GTI) can fail. Great video, as always.

[@HumbleMechanic]

+Finkle Einhorn thank you!

[@FluffyUnicornXR]

Just wanted to clarify, 06H145710D will fit in Mk5 FSI BWA yeah? All this revision talk is confusing me.

[@FluffyUnicornXR]

HumbleMechanic ??

[@justincace5517]

@@FluffyUnicornXR Yes... 2 years later. haha

[@FluffyUnicornXR]

@@justincace5517 i already did it… 2 years earlier hahaha

[@fartman10284]

The first 3 digits is a good indicator of family of DV's 06F = diaphragm 06H = piston (there is a rev C that doesn't have the cage of the rev D)

[@simonohalloran7180]

thanks for your video my vw golf gti mk5 had a lean error code . I changed the diverter valve with a new one and my car drives like a dream missive different

[@unityelt]

I replaced the stock with an upgraded piston dv a few years ago but now I got a check engine and I feel a difference, Just ordered a new one. hopefully It doesn't break fast.

[@arringtonmc]

THANK YOU THANK YOU!!!! Just bought a used CC and got an engine light a week later! P0299. Part on the way and replacing TODAY!

[@Steviee8]

Did this fix your P0299?

[@arringtonmc]

Steviee8 check and make sure your inter cooler pipe is secure as well

[@Steviee8]

@@arringtonmc lol, does that mean you found the problem in the cooler pipe? ;). and not the DV? anyways, hopefully I'll get mine P0299 fixed, just hope its not a failing turbo

[@arringtonmc]

Steviee8 I did replace the DV but also found the intercooler pipe was loose. P0299 was gone after that.

[@kefinatorlordofkevs8256]

3:42 you gave the answer is was looking for for months!!! I have a 2016 1.4 tsi and i do sound like i have a blow off now(loud pssshhhh) + the hissing sound like air is coming out when i hold the gas after the purge. So if i understand , my diverter valve is broken..but i dont have any lights in the dash that tells me that...thought the exhaust line had a hole in it or something.

[@pricey0986ify]

Hi great videos btw. I was wondering what your thoughts are on the GFBs DV+ version of the diverter valve?

[@TheArizonaAssasin]

Thanks for another great video. Do you think it's possible that oil in the DV connectors could cause a CEL and throw the P0299 code because the oil caused an electrical fault? I ask because my CEL has turned on 4 times in 6 weeks. I've replaced the PCV, the boost sensor, fixed a boost leak, inspected turbo and my car still got a CEL. So today the mechanic changed the diverter valve because there was oil in the connections. I'm just afraid of the CEL coming back on because all that's left is the turbo but the car runs smooth as per my KZbin videos. If I'm reading this service bulletin correctly, a diverter valve with oil in the connectors can trip the CEL with a P0299 but I wanted to know what you thought regarding that as a possibility. I've run out of things to fix with the P0299.

[@angelj7419]

Excellent explanation!

[@Kevinalvesmusic]

Quick question I just installed my new Turbo DV. I noticed the o ring though. do I need to lube that with bearing grease or something? What would you use? Or do I need anything at all? Also should I use lock-tight on the screws when putting back in? Thanks so much!

[@TheZitikis]

Thanks, very appreciate for video, very helped. 👊

[@TRiBaL1981]

Humble mechanic what are your thoughts about gfb dv+ ? Is this finally the best solution for both tuned or untuned cars?

[@niconiconnu]

I could be wrong but it feels like my mk7 GTI has lost power. Also I can hear the “pfffs” sound very clearly when letting off the throttle while under boost, and like you described it seems louder (in fact I used to not hear it at all, or maybe I wasn’t listening out for it until now). However I don’t have a CEL?

[@originalswolfsburg9889]

Hey. HM so I got a 2016 Gli. Today I got the EPC light on the dash . Pulled up the scanner and got a P0299 code. I’ve noticed there’s some oil dripping on the passenger side. Wondering if there’s any upgrade you would recommend?? Rather than just replacing with another oem prt

[@GspeedR]

My `06 Audi A4 2.0T threw repeated under boost codes but my diverter valve diaphragm wasn't broken. The dealership technician told me I needed a new turbo(even though I had no drivability issues). I installed a GFB DV+ and the codes never returned. The car is also MUCH more fun to drive. Win-win.

[@mariorepetto185]

Hey humble mechanic what do you mean tuning the ecu if you install a blow off valve instead of a DV valve

[@tijger42]

it broke on my stage 1 mk5 gti, thing pulled like a 1.2L and had a lot of turbo noise but no codes or lights whatsoever.

[@TheDopestMr]

Hey so the other day I installed a DV Spacer for my Mk5 Golf GTI to get that psssst pssst blow off valve type of sound but it doesn’t work at all. I don’t know what’s wrong. I checked my DV and it was alright (no cracks, but had some oil leaking). I hope if I replace my DV itt would work this time but if not then I give up

[@Lumlums]

I unplugged my connector and a bunch of oil came out and when I removed it, it had no tears. And I have a p0299 turbocharger under boost light. Do u think this is the cause to my check engine light? It still build boost fine. Peaked at 15 psi the held steady at 10 psi. Also I have an Audi A4 2.0t B7.

[@attilato2445]

I fitted the D version a week ago thanks DAP , to replace the old C version due to a lean code coming on all the time after 50km or so , though diaphragm was not torn ,changed any way and finding the newer version has made the engine less perkier ( less initial torque ) :( . Im trying to under stand how a cone at the end of the "D" version With HOLES is suppose to seal with out a seal as with the old "C" . ... can some one explain . engine check light still coming on but earlier than before ..after erasing codes. Frustrated...

[@cameronramirez7272]

I have a 1.8t Jetta mk6 ... I have no check engine light but I recently swapped coils & now my turbo spool sounds significantly louder & a bit of fluttering with a bit more of a bob noise when pressure is released. Is this in fact the stock diverter or is there any way to diagnose?

[@TheSlimsol]

​​​​​​I removed diverter valve and it was new piston type valve. One thing I noticed was that when i removed valve i saw spring was seperated from piston. I pushed it back in position but slight movement on valve popped the piston and spring out again. Is this normal behavior or DV or mine is broken

[@criz7270]

Hi, I don't have the CEL but I am throwing code 000051 on my VAG-COM which is the turbocharger bypass valve malfunction/ open circuit. My car which is a 2.0 tsi is showing some of the symptoms you mentioned above about the 1.8 with the loud sounding like it has a blow off valve symptoms. Just wondering if you think this could be electrical or what I'm totally stumped.

[@shadygrady1000]

Its unusual but I've had 2 that failed electronically. Can check the resistance (ohm) of the windings to verify.

[@eurownedmk71.88]

Just got a stage 1 tune flashed on my ecu and after one 2nd gear pull WOT hit redline hard on accident and now I have no boost. Ohmed out my diverter valve at 14ohms but when you push the Piston open and closed it never opens the connection on my meter it just reads 14ohms, shouldnt it read open once I push in the Piston?

[@michaelhopper7069]

My 2012 A5 is running great and the check engine came on a month after the original code said deverter valve and was reset how soon should it be replaced if is running great and the MPG are still the same ANY IDEAS,Thanks

[@Mrdubomb]

Have you seen these cause issues on the new beetle? I have a 2015 2.0 turbo that intermittently blows the fuse that powers the diverter, and a host of other components. No boost codes, I can get at the connector , but I cant get it off to check for oil. Dealer wants to sell me an entire turbo.

[@jesusfelix4619]

I need help!! Please I have a 2008 Volkswagen gti 2.0t, and I have the underboost code and a system lean, would the diveter valve be the problem ?

[@Alex-jj9hn]

P0101, I’ve done almost every thing I can with the code. It bucks, hesitates, misfires. Implausible single code. Would a PCV failing cause this or the n249?

[@GizOfWar]

My touran 2L diseal asv has a stutter/flutter when I let off the power do the diseal suffer from something like this ? It also suffers from a shake at idle which I can see to get right and when it's first started in the morning I engage the clutch and it jumps jumps as if I'm wheel spinning lol then won't ever doing again all day but clutch flywheel everything seems fine so I'm suspecting on the lines of injectors or fuel temp sensor 🤔 hope you can shine some light onit 😅

[@JimMcBob42069]

Is it possible to have a faulty diverter valve and no CEL? My gti feels sluggish. I tested pcv system by opening oil cap and checked bleed hole for vacuum and its good. DV is my second suspect but no CEL

[@damianberrutti3259]

Hello, i have p2099 error. And the pressure keep in 1000psi. (actual), when the Specifc is 400psi. When i dirving the presure specific increase and the actual increse only the presure specific exxed the 1000psi. Is this diverter valvue problem? I Have Tiguan 2011. Many Thanks. Excelent Video

[@johnmarco5017]

I have a stock 2000 b5 a4 1.8 AEB, does my cars ecm need the DV to be recirculated to idle normal?

[@luisrobancho6505]

nice i just had problem with my underboost so this is possibly is my problem ...

[@garywoodman9304]

I have a question if this part is failing does it always throw a check engine code ? My gti feels like boost level is low and I’m wondering if this might be my problem

[@danielarteaga1356]

What are the main things to check as far as sensors?

[@dubbified]

You are dope at presentation!!!!!!

[@HumbleMechanic]

Thank you. 🙏

[@aleksandras.6505]

for golf v (2005)2.0 tdi 140ps 103 kw where is this located?the erg valve is in front of the engine

[@W.Khairi]

Excellent, Thank you.

[@Caleb-lbj]

Hey this will help me BIG TIME my Peugeot 308 cc allure: my Check light under boost comes on when I hit 100kmh and have to Restart my car to Reset my boost

[@youngheart777]

Can the Diverter Valve cause p0087 fuel rail/system pressure too low and p0172 System too rich bank 1 ? Any experiences

[@jesusrincon1591]

Very helpful

[@jasontarpley5854]

My 1.8 turbo said I needed knock sensors.. they seemed to fix it for a week . Then it was falling on its face again.. then the two large vacume hoses kept blowing off. When I got them to stay it blew the airbox off .. what is wrong with my 03 cabriolet bug

[@ahmadelorfali4901]

My car have a P0299 boost pressure regulations - control range not reached fault cose. Can it be the diverter valve?

[@AlexSuarez]

At around 3:20 in this video, you mentioned cleaning the diverter valve connector, if it's got oil in it. My diverter valve is leaking and I'm going to rebuild/upgrade it with a GFB DV+. So my question is how would you clean it and what would you use? Spray is down with electronic contact cleaner? Use some sort of degreaser? Something else? Thanks in advance for your advice.

[@HumbleMechanic]

typically I just use brake cleaner.

[@deregna24]

Does the A6 2.0t 2007 have a diverter valve i cant seem to find it

[@steviecrx]

Can the diverter valve be in such bad shape that I get almost no boost until high rpm? The turbo spools way faster than it should barely pressing the gas and is pretty loud but the power just isn't there. I just picked this car up and fixed the terrible multiple misfires and it was running great for a few days now it's doing this. I am very mechanically I just have little to no experience with Volkswagens. Any help would be much appreciated

[@MrMartinezA25]

I love your content, we need a R&R of a Turbo on TSI.

[@thehermanli]

car threw the p0299/underboost code and this was the first thing i checked, as well as the waste gate arm(arm was nice and tight). when i removed the diverter valve, there was a small tear in the rubber diaphragm. thankfully oil was not leaking through to the point to where it may have damaged the connector. i cleaned out the electronic connector anyways/replaced the damaged valve with the newer metal piston configuration and it drives great again.

[@ahmedsaidu-kamara6760]

What's the waste gate arm? Can you send me a pic of it here? I own a 2007 Audi A4 and I pretty sure that my diverter valve is torn but I also want to check the waste gate as the engine is consuming a lot of oil.

[@thehermanli]

@@ahmedsaidu-kamara6760 kzbin.info/www/bejne/bZfOZ5aJeapmnqc the waste gate arm can be seen at 3:18, it is a long slender piece of metal.

[@randeepsingh2407]

Like your video, Got Audi 2011 A4 Quattro won't crank after replacing the starter. What could be the fault

[@HumbleMechanic]

Be sure your connections are good.

[@adrielhylton1400]

Hey I installed the GFB DV+ recently but never got a new overall diverter housing if that makes sense. And I noticed a P2261 code. Is it possible for the black plastic portion of the diverter that I didn’t change to go bad?

[@almilhouse9059]

I've a 06 vRS Octavia, this is original at 179k miles, I'm going to be changing it as it has to be one of the issues it's throwing up

[@Yakplanet_tv]

What type of Allen key to take apart the screw?

[@nielsvandenboom2943]

I can’t get my golf 7 R up to 4000 rpm steady when I want to launch it.. It only goes up and down between 3600 and 3900 rpm. Do you think this has anything to do with my DV?

[@saucemon]

2007 Passat in the shop now. 104K mi. Diverter valve replaced, but no boost felt at all and still throwing the P0299 code. Also hearing strange rattling sound with power loss. Sounds like driver side rear of engine. What now?

[@jamesdanner7850]

hey bro. I have an 05 a4 at my shop with the 0665/po299 code . haven't messed with many turbos so pardon any dumbness. I also had a 300 and a 301 in history. definitely gutless first test drive. and big gap in my charge values. I pulled the valve and see no tear but oil poured out of the plug. cleaned everything and put back in. then it misfired bad on no1 on next test. pulled plugs and all are dark but have white crud build up . definitely burning oil. with a fresh set of plugs it ran better and boosted once , charge values even at 1600. then I romped on it .. blue and black smoke bad. shut it off and restart 10 min later and Belched a building sized blue cloud. oil in tubing before throttle body, but also hisses and runs rough when I pull the oil cap off. I'm thinking I have turbo and pcv issues but wondering If u have any other testing advice before I scare the customer into trading it in

[@angitaylor4362]

I have an 06 Passat. Does this part work if I have a overboost condition? Help please

[@leonardoreyes8517]

With a p0299 would you do the diverter or n75

[@boombox469]

Great vid

[@dereckadams4438]

My 06 gli just started lacking power, strange noises when accelerating at higher rpms, etc Figured id go ahead and remove and inspect the DV... Its the original dv and the diaphram is completely shredded. Trying to figure out what had caused it to shred, because the car is stock

[@touringusa8760]

I'm running TFSI 2.0 in my 08 A3 and trying to figure out why the engine falters on transition from running with throttle mostly closed (as in rounding a bend) and then gradually adding more throttle while exiting to the straightaway. Is that a Diverter Valve issue or something else? No codes have been thrown to help hunt down the cause. Manual transmission, clutch engaged throughout the transition. BTW, always find your videos valuable. Thx for your advice.

[@PeterFeltersnatch852]

Did you ever figure out what your problem was I feel like I'm having the same issue?

[@benkohout6495]

Do you know if the d is still the most current one or j? Thanks

[@angitaylor4362]

I also have a high pitch wistling/screeching sound when I accelerate...sounds terrible.

[@SuperSixForFive]

Just saved me from smoke testing the car. Jumped right to the diverter valve and bingo, its torn. Thanks HumbleMech

[@HumbleMechanic]

Awesome

[@darianlafontaine7660]

Thank god for these comments same issue here!

[@AsapLawless]

Would putting a spacer on the DV cause the car to stall?

[@stefjanssen4397]

Thank you

[@shawnstylez3523]

Hey humble mechanic for a 2012 golf R or GTI what's the best set up a recirculating valve, B.o.v. Or a Spacer B.o.v

[@HumbleMechanic]

+Joseph Esquivel with out a tune, recirc

[@TheMajdi86]

what happen when the diaphragm broken? why it detect under boost?

[@bigbootyanime3630]

I'm at 17-18 pounds of boost what is the rating on those diverter valves

[@louisruth9348]

2016 VW Jetta GLI SE Gen6.5 2.0T. Stage one plus, cold air intake, muffler, aftermarket diverter valve. After installing the diverter valve, we no longer have a working turbo as the wastegate arm does not move correctly. Help???? Engine code.

[@naythan31]

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

[@havarazbre1]

thx very helpfull

[@josevega8470]

I’m getting a low turbo boost code any advice?

[@jacobswarringim]

That explains my boost leak and CEL code p0299

[@cars4ullc92]

will that be same with 2011 audi a4 quattro 2.0t ??

[@shafthemi4322]

I have a 2007 Audi a4 with the 2.0 tfsi and when I go full throttle, the power comes in and out almost like the diverter valve opens and closes every couple hundred RPMs

[@Cortex21682]

Whats better D or G? Because i have an golf 5 gti dsg edition30 and stage 2+ 370bhp and 550nm of torque. I have turbo flutter between 2700 to 3800. Like diverter valve on off on off on off. You know? My current valve is D. And i have ordered G. Some people tell me that this D revision have boost leak from brand new. Not much but it is there. What happend if i change the spring or stretch the spring on this diverter valve? For more strong spring. Sry for my bad English, iam German :)

[@francislauzon6492]

Can i have this problem with p2563 dtc ?

[@traderlincolnmitchell9786]

good video

[@berto371rr]

Im having a issue if someone can help me? I have a 2016 Gli 2.0 tsi ,Im not tuned . I have stock Downpipe but at the lower bend i have 3" to a resonator and then to the tip. I had an intake on but i took it off cause i thought mayne it was part of the issue. Ok so when im normal driving i smell nothing but if I'm going Say 20 or so and floor it and then when i let off it takes a second but the smell of something like sunburnt gas and exhuast fills the car. Now I thought maybe the DV was going bad but i have no CEL on and car seems to be running fine. I. Right at 31k miles on the car and im stumped.

[@faizalej3324]

Hi my car golf gti mk6 at high rpm 6000 have misfire below 6000rpm no promblem spakrt plug coil pack injector is good so i hope u can help me

[@adventureridergirl]

Can you tell me what the aluminum box, with oil and coolant lines running to it, in front of the battery is in a 2006 VW Passat 2.0T?

[@HumbleMechanic]

+Adventure Rider Guy it's the transmission cooler.

[@adventureridergirl]

Thanks! I was leaning towards an oil or transmission cooler, but I couldn't find it in the service manual to confirm.

[@zx10rider29]

Can the diverter valve still be bad/torn and not have a check engine light?

[@mik55tv22]

Yes if its not too bad your check engine light will not go on ...it only goes on when the numbers reach a certain threshold

[@maxrockatansky3896]

Switched out for the pierburg..think that's spelled wrong but phonetically correct. Anyway switch yours out with that and never see that p0299 fault again.

[@gorditosovo5902]

Bad dv throw p0300 codes??