p0299
Moderate
Opel · Sedans & Hatchbacks
Turbocharger/Supercharger Underboost
Quick Answer
Error code P0299 on your Opel Sedans & Hatchbacks means: Turbocharger/Supercharger Underboost. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Check engine oil level and condition
2
Inspect boost hoses for cracks or disconnection
3
Test boost pressure sensor voltage
4
Inspect wastegate actuator movement
5
Check turbocharger compressor for damage
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Boost pressure sensor
Turbocharger
Wastegate actuator
Boost hoses
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