P0299 - OBD II Trouble Code

Our automotive experts have put together the following information about the P0299 diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P0299 code.

What Does P0299 Code Mean?

OBD-II Code P0299 is defined as a Turbocharger/Supercharger "A" Underboost Condition

The engine control module (PCM) uses sensors to determine if the Turbocharger/Supercharger is providing the requested amount of boost. If the PCM determines that the requested amount of boost is not being provided, the PCM will set code P0299.

P0299 Symptoms

• Decreased engine performance
• Increased fuel consumption
• Lack of boost from the turbo/supercharger

Common Problems That Trigger the P0299 Code

• Brake booster pressure sensor failure
• Exhaust leak
• Manifold Absolute Pressure (MAP) sensor failure
• Powertrain Control Module (PCM) failure
• Turbo/supercharger control solenoid failure
• Turbo/supercharger failure
• Wiring issue