Hyundai Repair Questions? Ask a Mechanic for Answers ASAP
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This code is normally a mechanical fault, and also a very common fault .
Have to agree with the dealer but they can confirm this with there diagnostic scan tool and check the boost sensor etc which i think they did .
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Hard to say Richard if you can prove you had the P0299 code then yes you have a fighting chance .
If you are not under warranty find a good independent shop that works on Hyundai / Kai or Mitsubishi car
and have them check it and replace the turbo as the turbo you can get on Ebay for far less .
labour is only a two hrs .
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 .