P0299 on Audi 2.0t LOOSE WASTEGATE FIX 

Turns out the catalytic converter was bad so that might be a cause to

I found out a clogged catalytic converter can cause that code to come up. I installed a ECStuning HFC and the light and code disappeared, also need a stage two tune. I have a video on that.

So before I did this I would get the p0299 code all the time when I tried to go full throttle. After completing this I no longer get the code and my check engine light doesn't come on, plus it has a good pull while shifting or getting up to speed.

I found it easy this way just make sure you heat it up good and have a heavy hammer, mine was light and took longer to move the metal

Found out it was a clogged catalytic converter, so I bout a ecs tuing HFC and it's all good, no codes

Could be a clogged catalytic converter, I swapped to ECS Tuning FHC. A while after this video, the code showed up, so I went to a mechanic, and they pointed out that the O2 sensor before the catalytic converter was hotter than it should be. So I swapped out the cat and haven't had the boost code again.

Audi a5 2009 2.0 tdi

Yeah I'm not sure this I'd on a TFSI different set up

Depending on how much play it has, could be a worn bracket or bushing.

@@latenightgarage7895 Is this repair still holding up nicely on your car after 1 year?

So after that video, I noticed it held boost a lot better. I called the audi dealership and found out that the trubo was replaced with a new one around 60k miles. It was still throwing the P0299 code, and come to find out that it was a clogged catalytic converter. It wasn't letting exhaust pass fast enough, so it was making the top 02 sensor hot, and that's how we found out on a vagcom using live feed. So that might be another thing to check before you do this. I have a video on the ECStuning High Flow Catalytic converter, with installation and review.

@@latenightgarage7895 thanks for the update and the tip on checking the cat! Got almost 150k on the car so definitely could be a clogged cat

Mine was at up there to.

If this don't work look into vacuum leaks, sensors, and if non of those then try to get a vagcom hooked up and ask to see the front o2 sensor temp of it running hotter than usual, leads to a clogged stick catalytic converter that might be it. That's what turned out to be my problem. I have a video installing a ECStuning high flow catalytic converter and fixed the boost problem.

@@latenightgarage7895 OG

Also curious about this..

Doesn't look like I did.

Yeah

He didn't show the one thing the whole point of the video was for. He held the wastegate open by its rod, then heated it up and slightly bent the internal arm that holds the waste gate flapper or door. It compensates for the sloppy, worn out arm and rod pivots, and holds wastegate door tighter against opening, preventing boost leak, preventing the under boost dtc code from appearing.

What fixes that code?

Lol I dont control that.

@@latenightgarage7895 ok I’ll let it slide this time. 😂 I’m curious, did your fix work?