HomeBrandsSEATSUVs & Crossoversp0299
p0299
Call a Pro
SEAT · SUVs & Crossovers
Turbocharger Underboost Condition Detected
Quick Answer
Error code P0299 on your SEAT SUVs & Crossovers means: Turbocharger Underboost Condition Detected. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
KJKHMJKMKP
Likely Causes
  1. Leaking turbo boost hoses or connections
  2. Wastegate valve stuck open or faulty actuator
  3. Turbocharger compressor wheel damaged by foreign object
  4. Intercooler leak reducing boost pressure
  5. Low boost pressure due to turbo bearing wear
How to Fix It
1
Check all turbocharger boost hoses and connections for leaks or disconnection
2
Inspect wastegate actuator operation and response to boost pressure
3
Perform a boost pressure test using a scan tool or boost gauge
4
Check the intercooler for leaks or internal damage
5
Listen for grinding or whistling sounds indicating turbo bearing wear
Pro Tip
This issue typically requires professional diagnosis. Attempting this fix without proper training could cause further problems.
Parts You May Need
Turbocharger assembly
Wastegate actuator
Boost hoses and clamps
Intercooler
Turbo gaskets
Related Error Codes
P0171P0300P0420P0411P0441
Video Guides
Loading video guides…
Search more on YouTube →