What does this code mean?
The monitored boost is insufficient for the calibrated operating condition. This describes a control result, not proof of a failed turbocharger. Air-path restriction, control-system behavior and environmental conditions must be evaluated within the vehicle procedure. The cited GM bulletin documents an ice-related case with possible reduced power.
Sources and interpretation [1] [3]
A code identifies a detected condition, not a part that must automatically be replaced.
Before replacing a part
Record whether the fault occurs only in cold weather and compare desired with actual boost. Review the exact engine's air path and boost-control tests. A cold-weather bulletin is not evidence that every P0299 requires a turbocharger or software replacement.
Manufacturer communications
7Original wording in English
FORD, LINCOLN
Reported code forms P0299
Some 2021-2025 F-150/Expedition/Navigator vehicles equipped with a 3.5L EcoBoost engine may exhibit diagnostic trouble code (DTC) P0299 stored in the powertrain control module (PCM) and may also exhibit a rattle noise…
FORD
Reported code forms P0299
Some 2021 F-150 vehicles equipped with 3.5L PowerBoost engine and built on or before 30-Sep-2021 may experience a reduced engine power condition with an illuminated MIL and DTC P0299, P0301, P0302 and/or P0303 stored in…
FORD
Reported code forms P0299:00
Some 2024 F-150 Lariat/XLT/XL trim level vehicles equipped with a 3.5L PowerBoost engine may exhibit a condition where the right side turbocharger will enter an overspeed condition, causing turbocharger damage and may…
FORD
Reported code forms P0299
Some 2021-2022 F-150 Raptor/Tremor vehicles equipped with a 3.5L EcoBoost engine may experience reduced engine power with an illuminated malfunction indicator lamp (MIL) and diagnostic trouble code (DTC) P0299 stored in…
FORD
Reported code forms P0299
Some 2021 F-150 vehicles equipped with 3.5L PowerBoost engine and built on or before 30-Sep-2021 may experience a reduced engine power condition with or without blue smoke with an illuminated malfunction indicator lamp…
FORD
Reported code forms P0299
Some 2021 F-150 vehicles equipped with a 2.7L EcoBoost engine and built on or before 14-Jun-2021 may experience lack/loss of power with an illuminated malfunction indicator lamp (MIL) and diagnostic trouble code (DTC)…
Check vehicle applicability
5A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Sources and interpretation
These explanations are editorial summaries of the linked manufacturer material. PDF page numbers count from the first file page. Original publications are in English; translations are reference aids. A cited edition is not a claim that it is the manufacturer's latest instruction.
- Audi TT Quick Reference Specification Book · October 2013 ↗
Audi of America · PDF page(s) 137 ·
- 22-NA-002 · P0299/P0234 during cold or freezing temperatures ↗
General Motors · PDF page(s) 1 ·
- 2024–2025 MY OBD System Operation Summary for Gasoline Engines ↗
Ford Motor Company · PDF page(s) 86, 87 ·
Source check date · 2026-10-27
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.