P0299 Code: Turbocharger/Supercharger

Quick answer

P0299 is a generic OBD-II trouble code that means: Turbocharger/Supercharger – Underboost Condition. You can drive carefully for a short time, but have it fixed promptly. Ignoring it can reduce performance and damage other parts.

What does P0299 mean?

P0299 is a generic OBD-II trouble code that means: Turbocharger/Supercharger – Underboost Condition. The engine control module (ECM) stores this code when it detects a fault related to: Turbocharger/Supercharger.

Can I still drive?

Severity: Medium

You can drive carefully for a short time, but have it fixed promptly. Ignoring it can reduce performance and damage other parts.

Symptoms

Check engine light is on
Loss of power
Car goes into limp mode
Black smoke from the exhaust

Common causes

Boost leak or faulty wastegate/turbo
Vacuum or intake air leak
Faulty sensor or component

How to fix it

Read all stored codes and freeze-frame data with an OBD-II scanner
Check for vacuum and intake leaks (a smoke test is the fastest method)
Inspect the wiring and connectors for damage, corrosion or looseness
Replace the faulty component with a quality part
If unsure, have a qualified mechanic diagnose it

Frequently asked questions

What does code P0299 mean?

What causes code P0299?

The most common causes are: Boost leak or faulty wastegate/turbo; Vacuum or intake air leak; Faulty sensor or component.

How do I fix code P0299?

Start with these steps: Read all stored codes and freeze-frame data with an OBD-II scanner; Check for vacuum and intake leaks (a smoke test is the fastest method); Inspect the wiring and connectors for damage, corrosion or looseness; Replace the faulty component with a quality part.

Is it safe to drive with code P0299?

Severity: Medium. You can drive carefully for a short time, but have it fixed promptly. Ignoring it can reduce performance and damage other parts.

P0299: Turbocharger/Supercharger – Underboost Condition