Volvo Error Code P0299: How to Fix It

Medium 2-4 hours Medium Severity Verified June 2026
Error Code
P0299
Brand
Volvo
Product Type
automotive
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
2-4 hours
Volvo error code P0299 indicates a turbocharger underboost condition, meaning your engine isn't receiving the expected amount of pressurized air from the turbo system. This typically results from boost leaks in vacuum hoses, a faulty wastegate, or issues with the turbocharger itself, leading to reduced power and poor fuel economy.
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Tools You'll Need

How to Fix Error Code P0299

  1. Turn off engine and ensure safety

    Never work on a hot engine. Turbocharger components can reach over 1000°F and cause severe burns.
  2. Connect OBD2 scanner and verify code

  3. Visually inspect all boost hoses

  4. Check intercooler and pipes for damage

  5. Test wastegate actuator operation

  6. Inspect PCV system components

  7. Perform boost leak test

    Do not exceed 20 PSI during testing to avoid damaging intake components.
  8. Replace damaged components

  9. Clear codes and test drive

  10. Re-scan for codes

Parts You May Need

Vacuum hoses and boost pipes
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Wastegate actuator
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Turbocharger assembly
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Vacuum hoses and boost pipes
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Wastegate actuator
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Turbocharger assembly
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Vacuum hoses and boost pipes
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Wastegate actuator
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Turbocharger assembly
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Vacuum hoses and boost pipes
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Wastegate actuator
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Turbocharger assembly
Check Price on Amazon
Vacuum hoses and boost pipes
Check Price on Amazon
Wastegate actuator
Check Price on Amazon
Turbocharger assembly
Check Price on Amazon
Vacuum hoses and boost pipes
Check Price on Amazon
Wastegate actuator
Check Price on Amazon
Turbocharger assembly
Check Price on Amazon
Vacuum hoses and boost pipes
Check Price on Amazon
Wastegate actuator
Check Price on Amazon
Turbocharger assembly
Check Price on Amazon
Vacuum hoses and boost pipes
Check Price on Amazon
Wastegate actuator
Check Price on Amazon
Turbocharger assembly
Check Price on Amazon
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When to Call a Professional

Call a qualified mechanic if the turbocharger itself is damaged, if you're not comfortable working with pressurized systems, or if the code returns after replacing obvious boost leaks. Turbocharger replacement requires specialized tools and expertise.

Frequently Asked Questions

What causes Volvo P0299 error code?
P0299 is most commonly caused by boost leaks in vacuum hoses or intercooler pipes, a failing wastegate actuator, clogged PCV system, or internal turbocharger damage. Environmental factors like extreme cold can also trigger this code temporarily.
Can I drive my Volvo with P0299 code?
You can drive short distances with reduced power, but avoid heavy acceleration or high speeds. The engine is likely running in limp mode to prevent damage. Address the issue promptly as continued driving may cause further turbocharger damage.
How much does it cost to fix P0299 on a Volvo?
Repair costs range from $50-200 for simple hose replacements to $1500-3000 for turbocharger replacement. Most cases involving boost leaks cost $100-400 to repair, while wastegate actuator replacement typically runs $200-500 including labor.
Will P0299 damage my Volvo engine?
The code itself won't damage the engine as the ECU reduces power to protect components. However, ignoring the underlying boost leak or turbo problem can lead to oil starvation in the turbocharger, potentially causing complete turbo failure and metal debris entering the engine.
How do I prevent P0299 from happening again?
Regular maintenance is key - replace air filter as scheduled, use quality engine oil, allow turbo cool-down after hard driving, and inspect boost hoses annually. Address any oil leaks promptly as they can soften rubber hoses and cause premature failure.