Turbocharger or Supercharger Underboost Condition
Your engine is not making the boost pressure it should. This usually causes weak acceleration, poor power, and sometimes a check engine light with limp mode.
You can usually drive short distances gently, but power may be limited and the problem can get worse quickly. Avoid hard acceleration, towing, or highway merging until it is diagnosed.
P0299 sets when the powertrain control module sees actual boost pressure lower than the commanded or expected boost level for a certain time and operating condition. The fault can be caused by boost leaks, control system problems, sensor errors, exhaust flow issues, or a worn turbocharger/supercharger.
Yes. A leaking hose, cracked charge pipe, loose clamp, or leaking intercooler is one of the most common causes of P0299.
Yes. Many vehicles reduce power to protect the engine and turbo system when underboost is detected.
Only cautiously and for short trips if the vehicle still runs normally enough to move safely. Continued driving can worsen turbo damage or leave you with very limited power.
No. Many P0299 cases are caused by leaks, bad vacuum lines, a faulty wastegate control system, or a sensor problem rather than a failed turbocharger.
The vehicle usually feels weak, slow to accelerate, and may struggle more than normal when climbing hills or merging onto the highway.