P0299 on Acura
Turbo/Supercharger Underboost Condition
P0299 on Acura vehicles indicates turbo/supercharger underboost condition. Au7o has documented this code across 1 Acura model — most commonly on RDX. 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. Typical repair costs on Acura range from $400 to $2,200, depending on the specific model and root cause.
Common Causes of P0299
- •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
P0299 on Acura by Model
Acura RDX(1 issue)
- K23A1 Turbocharger Wastegate Flow Actuator Diaphragm Tears Causing Boost Loss and Limp Mode2007-2012
The first-generation RDX's K23A1 2.3L turbocharged four is unique in the Honda/Acura lineup, and its most commonly reported hard failure is not the turbo cartridge itself but the variable-flow wastegate actuator that controls it. The rubber diaphragm inside the flow actuator tears with age and heat cycling (owners commonly report this in the 90,000-130,000 mile range), so the actuator can no longer hold or modulate the wastegate arm. The result is underboost or overboost codes, a check engine light, and reduced power. Owners on AcuraZine repeatedly report dealers quoting a complete turbocharger assembly replacement (quotes as high as several thousand dollars) for what is usually an actuator, solenoid, vacuum-line or linkage fault. The vacuum lines, boost control solenoid, wiring and wastegate linkage are all more likely to fail on this engine than the turbo bearings.
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What does P0299 mean on Acura?▼
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 Acura specifically, this code is documented across 1 model.
What causes P0299 on Acura vehicles?▼
Common causes on Acura: 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. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0299 on a Acura?▼
Repair costs on Acura range from $400 to $2,200, depending on the specific model and root cause.
Which Acura models have P0299 documented?▼
Au7o has documented P0299 on 1 Acura model: RDX.