2022 Chevrolet Malibu: Code P0299 indicated a turbo charger underboost
Common wear/failure (not a recall)
Symptoms
Owners of the 2022 Malibu report: code P0299 indicated a turbo charger underboost. CarComplaints.com lists 2 owner complaints, average mileage 52,050 miles.
NHTSA has 34 owner complaints for the 2022 Malibu in this area. Examples:
- NHTSA complaint ODI #11759251 (filed 08/24/2026): “The contact owns a 2022 chevrolet malibu. the contact stated that while attempting to start the vehicle, the check engine warning light illuminated. an independent mechanic was contacted. no warning light was illuminated. the vehicle was taken to an independen…”
- NHTSA complaint ODI #11753711 (filed 07/30/2026): “The contact owns a 2022 chevrolet malibu. the contact stated that while driving at an undisclosed speed, the message “engine power reduced” was displayed. the failure was a persistent failure. the vehicle was taken to the dealer where it was diagnosed with tur…”
Likely causes
Sources do not establish a single root cause; diagnosis is needed. Owner-reported fixes are listed below.
Fix, in plain English
Most common owner-reported solutions on CarComplaints.com: replace turbo under warranty (2 reports). Check for open recalls and extended warranty coverage with a dealer before paying out of pocket.
DIY difficulty: Pro
Internal engine work (lifters, oil consumption, fuel dilution diagnosis) requires engine teardown or dealer software/tests. (Our assessment.)
Cost
No sourced cost range: get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
AutoZone · O'Reilly · Advance · RockAuto
Sources
- CarComplaints.com: Code P0299 indicated a turbo charger underboost (2022 Malibu)
- NHTSA complaints API, 2022 Malibu
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