P0299 on Dodge: How to Diagnose & Fix
Turbo/Supercharger Underboost Condition
1 Dodge model · 1 documented issue · 1 critical · $800-$2,500 repair
P0299 on Dodge by model: symptoms, diagnosis and fix
The turbo oil feed line develops restrictions causing oil starvation and turbo bearing failure. Turbo failure can occur well before 100,000 miles. Oil starvation is the primary cause of premature turbo failure on SRT-4 models.
Common Symptoms
- Loss of boost / reduced power
- Blue or white smoke from exhaust
- Whining noise from turbo area
- Oil leaking from turbo seals
- Check engine light with boost codes
How to Fix
Replace turbo oil feed and drain lines during turbo replacement. Idle 30-60 seconds before shutdown to cool turbo. Use full synthetic oil only, change every 3,000 miles maximum. Inspect oil feed line at every oil change.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- AGP TD04 turbo oil-supply line kit
Available replacement feed line for stock, big-wheel stock and Mopar Stage 3 turbo configurations Fitment: Product explicitly lists all 2003-2005 Dodge SRT-4s; not a generic big-turbo T3/T4 kit Live direct US product page when checked
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Sources for this issue (1)
P0299 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0299 mean on a Dodge?
P0299 stands for "Turbo/Supercharger Underboost Condition." P0299 means the engine computer detected an underboost condition — the turbocharger or supercharger is producing less boost pressure than the PCM expects for the given conditions. The computer compares the manifold/boost pressure sensor reading to a target based on engine load, and when actual boost falls short, it sets this code. The most common real-world cause is a leak somewhere in the intake/charge-air path. You'll typically feel reduced power or sluggish acceleration, and the engine may go into a reduced-power mode. On Dodge it is documented across 1 model: Neon.
What are the most common causes of P0299?
The most common causes of P0299 are: Boost/intake leak (cracked or loose charge-air hose or intercooler), Faulty or sticking turbo wastegate or actuator, Stuck or clogged variable-geometry turbo vanes (VGT), Faulty boost pressure or MAP sensor, Leaking or disconnected vacuum/boost control lines, Restricted air intake or clogged air filter, Failed boost control solenoid, Worn or failing turbocharger. The specific cause varies by vehicle.
How much does it cost to fix P0299 on a Dodge?
Published repair estimates on Dodge range from $800 to $2,500 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0299 on a different make?
View P0299 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.