Diagnosing turbocharger and diesel engine problems: smoke, codes, shaft play, boost leaks.
If your diagnostic scanner just pulled a P0046 Turbocharger Boost Control Circuit Range/Performance code, your turbo’s variable geometry system is telling you something is wrong with how it’s reporting boost control back to the ECM. This is one of the more misunderstood turbo codes out there, and chasing the wrong part can cost you a
The P0234 Turbocharger Overboost Code is your engine control module telling you the turbo is producing more boost pressure than the system is programmed to allow. On a diesel, that is not a minor warning light. Overboost puts real stress on pistons, head gaskets, and the turbo itself, and left alone it can turn a
P0234 Turbocharger Overboost Code: Causes, Diagnosis & Fix Read More »
The P0299 Turbocharger Underboost Code is one of the most common and most misunderstood fault codes we see roll through the shop, and if you drive or wrench on a modern diesel long enough, you will meet it. It means the engine control module (ECM) commanded a certain amount of boost pressure and the turbo
P0299 Turbocharger Underboost Code: Complete Diagnosis Guide for Diesel Trucks Read More »
P0299 is one of the most common diesel OBD codes — and the turbocharger is rarely the first thing to blame. Here’s a systematic diagnosis approach that saves time and money.
How to Diagnose a P0299 Underboost Code on a Diesel Truck Read More »
Most turbocharger failures are preventable. Learn the five root causes responsible for the majority of diesel turbo failures and what you can do to avoid them.
5 Most Common Causes of Turbocharger Failure in Diesel Trucks Read More »
Black smoke from a diesel exhaust almost always means incomplete combustion. The turbocharger is often involved. Here is how to diagnose the cause systematically.
What Causes Black Smoke from a Diesel Engine? Diagnosis Guide Read More »
If you’re running a 1.9 TDI making 105 HP, you already know that little Garrett variable-geometry turbo is the heart of the engine. When it starts to go, the symptoms show up fast: lazy throttle response, a haze of blue or black smoke, and a limp-mode warning that kills your boost right when you need
Signs Your VW or Audi 1.9 TDI Turbo Is Failing (And What To Do) Read More »
Learn the 7 most common signs of turbocharger failure from the experts at PT Turbo — in business since 1978. Catch problems early and avoid costly engine damage.
7 Warning Signs Your Turbocharger Is Failing (And What To Do About It) Read More »
