2012 Audi A4 P0299 Turbo Charger UnderBoost

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3 жыл бұрын

How to diagnose 2012 Audi A4 Engine trouble code P0299 Turbo Charger Under Boost.

Пікірлер: 63

@szamanisticrealistic2659 Жыл бұрын

Had the same code few days ago. It turned out to be a small hose over the Turbo, it cracked and went loose. After fixing it there were no more errors. Also together with P0299 I had some glow plug codes. That tubing was also connected to the engine block right next to the plug no4.

@Connor-s1k 2 ай бұрын

Hi, was the glow plug code P0674 by any chance? Cylinder 4 Glow plug circuit/open. I've got the same pair of codes and now I'm praying it's the same cause it sounds like an easy fix. If you have part number for the hose I'd be forever grateful

@tornadotayte 2 ай бұрын

Please help this man

@Connor-s1k 2 ай бұрын

I managed to find the issue, it was a vacuum line on top of the engine that had split, along with a dodgy egr cooler gasket. Fortunately they were both cheap fixes, although the egr leak was a pain

@tornadotayte 2 ай бұрын

@kingconcookie I'm really happy you figured it out. Might also have the same issue, so thanks for the advice! Was actually sad to see there wasn't a reply to you lol

@Connor-s1k 2 ай бұрын

@@tornadotayte I found my leak by taking the airbox off and then starting the car and having my bare hand right in around the turbo to feel for air. The vacuum hose was much more obvious though

@derekloftus6768 9 ай бұрын

So I just put on an ecs tuning diverter valve spacer as well as turbo muffler delete. Did the muffler delete first and ran it a few minutes.. fine. Did the spacer and now getting the code. Waste gate is fine. Could this possibly be the spacer not sitting right?

@vtraudt 10 ай бұрын

For me the fix (on transverse as well as on longitudinal 2.0T) for this code has been to take the 'slack' out, caused by worn connection of the rod to wastegate. I have NOT used the clip (have seen the clip, but found hard to install). Instead I take the slack out by shortening the wastegate rods so that it is pretensioned again. The easiest way to BEND the rod (makes it shorter). The last car (my 2009 A4), the first bend was not enough, and code returned after a while .I applied an S shaped bend. Fixed now.

@mark.r8900 10 ай бұрын

Hi, is it possible that the actuator rod is nice and tight but the wastegate flapper inside the turbo housing is loosed and wobbly? Great tutorial. Thanks

@jonathaanttv1222 3 жыл бұрын

What issues where your car was having when u were driving ?

@justinf7674 Жыл бұрын

Did your wastgate actuator rod have any play? I suspect I have a bad wastage flapper as well, but the rod has no play at all.

@jd9352 Жыл бұрын

Yes, it had a lot of play. Check the video of the turbo when I removed it. kzfaq.info/get/bejne/eLFidrCF192yh5s.html

@seanh9869 10 ай бұрын

That's what i wanted to know. Wish his video showed that!

@kaliekmiller5056 2 жыл бұрын

Do you have to replace the whole turbo or can you use that factory upgrade clip that they have for it?

@jd9352 2 жыл бұрын

Unfortunately yes. It is more cost effect to purchase a new turbo than taking out the turbo and repairing the waste gate because both procedures would be removing the turbo. Since you have to remove the old turbo; this is a good time to upgrade! More boost more power. That's what I did !

@vtraudt Жыл бұрын

Can you link to the clip (heard that is the factory 'fix' to take the slack out of the wastegate and make sure it is fully closing).

@seanh9869 10 ай бұрын

@@vtraudt pretty sure the clip is for preventative maintenance to strengthen and prevent it from going loose

@Wasco_Builds 2 жыл бұрын

So basically I replaced the diverter valve already and i just got shot the same code for my audi 2013 a5 if the waste gate clip is loose could i not just fix that

@jd9352 2 жыл бұрын

What I understand the procedure to fixe the waste gate is to remove the turbocharger. You might as well get a upgraded high performance replacement.

@Grinast 11 ай бұрын

👍

@Ulloaard Жыл бұрын

I have that problem but I don’t have money now for change. Can I use my car anyways or what u advise me?

@jd9352 Жыл бұрын

You can drive the car, but the performance will be to the amount of pressure being lost.

@jd9352 Жыл бұрын

@BASSNSANE thanks for the video link. Very helpful 👌

@najim-fx6626 2 жыл бұрын

I got this check engine code after 3 days of replacing a new turbo. What could be the problem?

@jd9352 2 жыл бұрын

Was the diverter valve replaced?

@najim-fx6626 2 жыл бұрын

@@jd9352 Hi thank you for replying. I replaced the whole new turbo that comes with a new diverter valve. What also could be the problem maybe a bost sensor? The code it says turbocharger underboost..

@jd9352 2 жыл бұрын

@@najim-fx6626 Well 2 things 1st the sensor is detecting low turbo pressure. Check the installation of the diverted calve (leaks) check the turbo for leaks. have you checked turbo pressure? 2nd verify electrical connection from diverted valve and wiring harness. Could be short where wire is exposed or faulty connector.

@jd9352 2 жыл бұрын

@@najim-fx6626 It could be a faulty diverted. Do you have the old to swap out. Also did you clear the codes after the new turbo was replaced ? I would clear the codes as well.

@Antonio-kg6fz Жыл бұрын

I need help finding the turbocharger boost sensor I have the same code p0299 but mine says Boost pressure regulation control not reached Audi A6 2015

@jd9352 Жыл бұрын

The sensor on A4 should be underneath the turbo. watch my 2012 Audi A4 Turbo Replacement Part 1 thru 3 for the locations.

@jd9352 Жыл бұрын

2012 Audi A4 Turbo Replacement Part

@jd9352 Жыл бұрын

kzfaq.info/get/bejne/q9t6oNyImMvGZ3k.html

@phillwilliams3399 2 жыл бұрын

Is this a diesel a5 mate?

@baloukafou2962 2 жыл бұрын

no it's benzin

@phillwilliams3399 2 жыл бұрын

Sorry i mean A4 ?

@patsfball3710 2 жыл бұрын

Saw a guy heat that easte gate til its glowing red and smack it with a hammer to fix

@HeadsUP253 Жыл бұрын

Hows that gonna fix it by heating up the waste gate until glowing hot ?

@markalbrechtsen Жыл бұрын

Heating the metal up softens the metal so when you smack it with a hammer, it will create a tight seal on the turbo instead of being loose.

@chubbygreens420 2 жыл бұрын

3/8? Audi should be all metric no?

@jd9352 2 жыл бұрын

Yes, all metric

@PKmuffdiver Жыл бұрын

Where can I get a replacement (remanufactured) turbo. Stealership quoted me just over $5k for it. Ffs

@jd9352 Жыл бұрын

Here ae some sites that sell aftermarket turbos: www.urotuning.com/ www.moddedeuros.com/

@PKmuffdiver Жыл бұрын

@@jd9352 Thank you!

@asiancanadian4887 3 жыл бұрын

How to get the 4th bolt out?? Got 3 of em out already but the one in the corner i cant find enough space to take off the bolt

@jd9352 3 жыл бұрын

Yes, you can access the bottom bolt(4th bolt) from the back of the engine. with a 3/8 extension and a wobbly 15mm deep socket. Watch my 2012 A4 turbo replacement Part 1. kzfaq.info/get/bejne/n5OAq8igutGVqZ8.html

@jd9352 3 жыл бұрын

Also you can watch this video. This guy shows in little more detail take out that bottom exhaust bolt. kzfaq.info/get/bejne/mL1nY6Sdrt_Tlmw.html

@asiancanadian4887 3 жыл бұрын

F*cking love you man

@KGZAG2012 3 жыл бұрын

That's an easy 30min permanent fix right there in that position !! I've fixed dozens..

@Truevibe 3 жыл бұрын

@@KGZAG2012 how?

@chanelwhitaker9514 3 жыл бұрын

im making 10-11psi boost under full load but still get a random p0299 code. WTF code it be? No leaks or loose hoses. New plugs, diverter valve. Maybe the boost sensor?

@jd9352 3 жыл бұрын

Assuming you replaced the turbo or verified the waste gate is good. I would get that sensor checked.

@frankish5314 3 жыл бұрын

Assuming 10psi is the correct amount of boost you can do a boost leak test then at the same time read what the boost sensor is giving to the engine computer on your scan tool.. I use torque app pro on my smartphone together with the $25 dongle plugged into the OBD2 port. if there is a significant discrepancy its probably the sensor. Seal up any boost leaks while your there.

@214ES 2 жыл бұрын

We just replaced the whole turbo too and still having this code. Moving to the sensor next

@longbar2344 3 жыл бұрын

u need to know the difference between nuts bolts and screws lol

@lobssangmarrero4781 3 жыл бұрын

This man showing some good information on not so easy of a car to work on that can help a lot of people including yourself because u are watching the video also and all u can comment is that he needs to learn the difference between nuts and bolts. U must be 12

@longbar2344 3 жыл бұрын

@@lobssangmarrero4781 why does it bother or matter to you what i said darling?

@user-yd7cu4vx7f 2 жыл бұрын

@@longbar2344 💀💀💀💀 DARLING