P0299 on FORD FOCUS — Turbocharger/Supercharger A Underboost Condition

Q: "What does P0299 mean on a FORD FOCUS?"

"P0299 indicates: Turbocharger/Supercharger A Underboost Condition. This is a fuel injection code. 3 FORD FOCUS owners have reported this to NHTSA."

Q: "What are the most common causes of P0299 on FORD FOCUS?"

"Based on 3 NHTSA reports, the most commonly cited components are: Power Train,Engine,Fuel/Propulsion System, Engine, Power Train,Unknown Or Other. These percentages are based on the component field in owner complaints."

Q: "Is P0299 serious on my FORD FOCUS?"

"Of 3 NHTSA reports for this code on FORD FOCUS, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my FORD FOCUS 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 FORD FOCUS

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.

3 FORD FOCUS owners have reported this issue to NHTSA across model years 2016-2017. Most reports come from the 2017, 2016 model years.

Real FORD FOCUS Owner Reports

Source: NHTSA Complaints Database

"This is the second time this car gets a p0299 failure. i was on the freeway, trying to speed up, when the engine revved up quickly, but did not change gear. instead, the car started slowing down. after a few seconds, the car started speeding up at a sluggish rate."

— 2016 FORD FOCUS owner · POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM · Filed 06/23/2020

"I bought this car a few months ago with no problems from a used car dealership in Kentucky. A few days later the check engine light came on and the turbo was not working."

— 2017 FORD FOCUS owner · ENGINE · Filed 01/24/2024

"I bought a brand new 2017 ford focus and have had it in the shop 6 times for an error code of p0299 turbo/super charger underbooster going off. the engine is losing power when it starts acting up and to protect the car it shuts down the underbooster."

— 2017 FORD FOCUS owner · POWER TRAIN,UNKNOWN OR OTHER · Filed 08/08/2019

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

📊 Complaint Trend by Model Year

1

'16

2

'17

Common Causes on FORD FOCUS

Based on NHTSA complaint component analysis for this vehicle.

POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM 33.3%

ENGINE 33.3%

POWER TRAIN,UNKNOWN or OTHER 33.3%

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 FORD FOCUS? ▾

P0299 indicates: Turbocharger/Supercharger A Underboost Condition. This is a fuel injection code. 3 FORD FOCUS owners have reported this to NHTSA.

What are the most common causes of P0299 on FORD FOCUS? ▾

Based on 3 NHTSA reports, the most commonly cited components are: Power Train,Engine,Fuel/Propulsion System, Engine, Power Train,Unknown Or Other. These percentages are based on the component field in owner complaints.

Is P0299 serious on my FORD FOCUS? ▾

Of 3 NHTSA reports for this code on FORD FOCUS, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my FORD FOCUS 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.