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Check engine light · Engine codes

P0299: Turbocharger/Supercharger A Underboost Condition.

Powertrain · GenericP0299
Get it fixed soon
What it means

The turbo isn't making the boost the computer asked for, so the car feels slow and may go into reduced power.

How serious

Get it fixed soon. A few more days of normal driving is usually OK, but waiting can turn a small repair into a bigger one or a breakdown.

Where a shop starts

Boost leak (cracked hose or intercooler). Then: sticking wastegate; worn turbocharger.

Owners named P0299 in 141 complaints to the U.S. government, most often on the Chevrolet Cruze.

Models that report it most

Complaints that name P0299, by model. Raw counts, not a failure rate: popular models get more complaints. Tap a model for its years, mileage and what owners say fixed it.

P0299 by model: P0299 Buick Encore (10) · P0299 Chevrolet Cruze (10) · P0299 Chevrolet Malibu (10)

The details

What P0299 means

The turbo isn't making the boost the computer asked for, so the car feels slow and may go into reduced power.

Can I drive with P0299?

Get it fixed soon. A few more days of normal driving is usually OK, but waiting can turn a small repair into a bigger one or a breakdown.

30% of the owner complaints that name P0299 also say the car loses power or goes into limp mode. A complaint can describe more than one problem, so this doesn't prove the code caused it.

Common causes of P0299
  • Boost leak (cracked hose or intercooler)
  • Sticking wastegate
  • Worn turbocharger
  • Faulty boost control solenoid

A shop should confirm the cause with a scan and tests before replacing parts.

What owners describe
  • Loses power or goes into limp mode: 30% of complaints
  • Shakes, runs rough or misfires: 12% of complaints
  • Warning lights and electrical faults: 11% of complaints
  • Stalls or shuts off: 8% of complaints

Share of complaints naming the code whose text also mentions each problem.

Model years that report P0299 most

2022 Chevrolet Malibu (6), 2014 Chevrolet Cruze (5), 2019 Chevrolet Trax (5), 2018 Chevrolet Equinox (4), 2013 Ford F-Series (3), 2015 Ram pickup (3).

Related codes

P0236 P0234 P0222 P0221 P0219 P0218 P0217 P0204

Quick answers

What does P0299 mean?

Turbocharger/Supercharger A Underboost Condition. The turbo isn't making the boost the computer asked for, so the car feels slow and may go into reduced power.

Can I drive with P0299?

Get it fixed soon. A few more days of normal driving is usually OK, but waiting can turn a small repair into a bigger one or a breakdown.

What causes P0299?

Boost leak (cracked hose or intercooler); Sticking wastegate; Worn turbocharger; Faulty boost control solenoid.

Counts: NHTSA owner complaints whose text names P0299. A complaint is an owner's report, not a diagnosis. Meanings: the standard SAE J2012 definitions in our own words; manufacturer codes only where verified for that make. General information, not repair advice for your car.

Updated · Free to use with credit: Source: The Lemon Index (lemonindex.com). Get the data

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