P0299 on CHEVROLET EQUINOX — Turbocharger/Supercharger A Underboost Condition

Q: "What does P0299 mean on a CHEVROLET EQUINOX?"

"P0299 indicates: Turbocharger/Supercharger A Underboost Condition. This is a fuel injection code. 8 CHEVROLET EQUINOX owners have reported this to NHTSA."

Q: "What are the most common causes of P0299 on CHEVROLET EQUINOX?"

"Based on 8 NHTSA reports, the most commonly cited components are: Engine, Engine,Fuel/Propulsion System, Power Train,Engine. These percentages are based on the component field in owner complaints."

Q: "Is P0299 serious on my CHEVROLET EQUINOX?"

"Of 8 NHTSA reports for this code on CHEVROLET EQUINOX, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my CHEVROLET EQUINOX shows P0299?"

"1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare."

What P0299 Means on Your CHEVROLET EQUINOX

P0299 is a diagnostic trouble code indicating: Turbocharger/Supercharger A Underboost Condition. This code relates to the fuel injection system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

8 CHEVROLET EQUINOX owners have reported this issue to NHTSA across model years 2018-2022. Most reports come from the 2018, 2019 model years.

Real CHEVROLET EQUINOX Owner Reports

Source: NHTSA Complaints Database

"Good afternoon I hope everyone is well. This complaint I'm filing for Turbocharger/Supercharger A under boost condition (P0299) with my daughters 2018 Chevy Equinox."

— 2018 CHEVROLET EQUINOX owner · ENGINE · Filed 12/02/2024

"P0299. Engine power reduced [XXX] mileage 95617 Charged air cooler needs to be replaced. P0299 [XXX]. Mileage 96101. Turbocharger O.E. REPLACEMENT replace Turbocharger Assembly. P0299 [XXX] engine power reduced. P0299 [XXX] engine power reduced. Mileage 68340."

— 2018 CHEVROLET EQUINOX owner · POWER TRAIN,ENGINE · Filed 05/29/2024

"Code P0299 Dash says engine power reduced, speed has been reduced, a long with power and gas consumption not good, smelling gas in oil, not sure if connected."

— 2018 CHEVROLET EQUINOX owner · UNKNOWN OR OTHER · Filed 01/15/2024

"Winter 2020/2021 I had to replace my exhaust manifold and now winter 2021/2022 I am having issues with my turbo/super charger but same code of P0299 for both incidents. Wondering what is going on with my vehicle."

— 2018 CHEVROLET EQUINOX owner · POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM · Filed 01/02/2022

"A "Reduced Engine Power" warning in a 2019 Chevrolet Equinox LT usually indicates the car has entered "limp mode" to protect the engine, most commonly caused by a dirty/faulty throttle body, loose Charge Air Cooler (CAC) tube, or sensor issues (MAF/TPS)."

— 2019 CHEVROLET EQUINOX owner · ENGINE,FUEL/PROPULSION SYSTEM · Filed 10/04/2025

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

4

'18

2

'19

1

'20

1

'22

Common Causes on CHEVROLET EQUINOX

Based on NHTSA complaint component analysis for this vehicle.

ENGINE 37.5%

ENGINE,FUEL/PROPULSION SYSTEM 25%

POWER TRAIN,ENGINE 12.5%

UNKNOWN or OTHER 12.5%

POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM 12.5%

What To Do Next

1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.

Frequently Asked Questions

What does P0299 mean on a CHEVROLET EQUINOX? ▾

P0299 indicates: Turbocharger/Supercharger A Underboost Condition. This is a fuel injection code. 8 CHEVROLET EQUINOX owners have reported this to NHTSA.

What are the most common causes of P0299 on CHEVROLET EQUINOX? ▾

Based on 8 NHTSA reports, the most commonly cited components are: Engine, Engine,Fuel/Propulsion System, Power Train,Engine. These percentages are based on the component field in owner complaints.

Is P0299 serious on my CHEVROLET EQUINOX? ▾

Of 8 NHTSA reports for this code on CHEVROLET EQUINOX, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my CHEVROLET EQUINOX shows P0299? ▾

1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare.