Oct 19, 2003 · If you get a CEL / Emissions Workshop message, have the code read and it comes back with P0299 turbocharger underboost - please post what you did to resolve the problem to this thread. …

Jul 12, 2020 · P0299 Turbo Underboost Issue 1 reading Jump to Latest 133K views 35 replies 17 participants last post by roadrunner420 Aug 5, 2025

Jan 26, 2010 · Underboost P0299 1556 Issue and Resolution There are a lot of threads indicating problems with underboost, but not many with resolutions. Mine is a 03 Jetta. The symptoms were the …

Oct 12, 2011 · I have been having a lack of power for a few months. Limp mode intermently. I have cleaned intake, and replaced EGR with a race pipe. Found intercooler had a hole in it, replaced with …

Jun 5, 2023 · My engine light came on again and it says P0299, I already replaced all the vacuum lines, and the N75 valve. Can anyone tell me where to start? Here’s a picture of around the egr valve …

Jan 26, 2010 · 9 hours later on P0299 turbo underboost I was working a 2005 Passat TDI with 246,000 miles. Presented with the infamous P0299 code plus P0741 (torque converter!). Since the owner …

Jun 25, 2023 · Code # P0299 (#3) An unlucky number of gm owners with this 4-cylinder engine (and possibly any small engine with a turbo) appear to have turbo issues I do not know the failure rate, it …

Nov 16, 2011 · Hi all, I am new to the site and a new TDI owner. I purchased my TDI in Oct 2011 and now having a problem. I have a 2006 Jetta 1.9L PD TDI (BRM) with 92,000 miles; I am having the …

Feb 25, 2020 · I couldn't find where this issue has been addressed of late, so... We have been on the road, towing a 10K 5th wheel, with our 2019 3500 Ram 6.7L Turbo Diesel approximately 6,000 miles …

Jun 4, 2025 · Said P0299 and the likely solution was the Turbocharger By-Pass Valve. Usually there’s a picture printed on what you need to get but there wasn’t this time and they didn’t have any in stock.