StopOrDrive

Enter a 5-character code such as P0420, P0301, or P0457.

We don't have that code yet

Codes starting with P are engine and transmission, B are body, C are chassis, and U are network communication. A 0 as the second character means a generic code shared by all makes; a 1 means a manufacturer-specific code, so its meaning depends on your brand.

A steady check engine light usually means get it checked soon. A flashing check engine light means an active misfire: reduce speed and stop driving as soon as it is safe.

That doesn't look like an OBD-II code

A valid code is one letter (P, B, C, or U) followed by four characters, for example P0420.

P0299 Turbocharger or supercharger underboost

Can I drive with P0299?

Drive soon

OK to drive for now, but get it fixed within days to a couple of weeks, or the damage and the bill can grow.

Power drops, and ignoring a failing turbo can send metal debris into the engine.

What does P0299 mean?

The turbo or supercharger is producing less boost pressure than the computer expects.

What causes P0299?

  1. Boost leak from a cracked intercooler hose or loose clamp
  2. Faulty wastegate or actuator
  3. Faulty boost pressure sensor
  4. Failing turbocharger
  5. Clogged air filter

How much does it cost to fix P0299?

$100 – $3,000

Hose or clamp: $100–$300. Boost sensor: $100–$300. Turbocharger: $1,500–$3,000 or more.

Confirm the code yourself

A low-cost scanner lets you read the code, clear it, and see if it comes back before paying for a diagnosis.

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