Code P0299 Means there is a problem with the boost pressure control, the boost pressure is too low.
Thus, it comes to power loss.
Symptoms are also the flashing check engine light .
Unfortunately, this can have many causes.
The cause could be secondary air, so check the hoses between turbo, intercooler and engine.
Check for small crack in the turbo hose, which can not be seen visually, but is noticeable by whistling and loss of power.
Check hoses and pipes sit properly and are nice and tight .
In addition, check the air filter, air mass meter and the boost pressure sensor for damage, soiling or faulty cabling.
In most cases, this error code is also set when there is a mechanical problem with the turbocharger or the exhaust system is affected by deposits.
If the Turbo has the control module on the side then it could be the complete unit .