Turbocharge Engine Underboost
Table of contents
- Possible Causes
- How To Fix
- Tech Notes
- Cost To Diagnose
- When is the code detected
- Possible Symptoms
- Description
P0299 BUICK Possible Causes
- Faulty Injector Control Pressure (ICP) sensor
- EGR system fault
- Engine mechanical condition
- Low oil pressure
- Faulty Turbo/Supercharger
How do I fix code P0299 BUICK?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Tech Notes
- There is a factory service bulletin for the following Buick models:
- Buick Encore 2013-2019
- 2013-2019 Buick Encore Factory Service Bulletin OBDII Code P0299
Cost of diagnosing the P0299 BUICK code
The cost of diagnosing the P0299 BUICK code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
When is the code detected
The P0299 code is set when the measured MAP pressure is more than 39 kPa below the expected range for 10 seconds.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0299 BUICK Description
The Manifold Absolute Pressure (MAP) sensor measures the pressure inside the intake manifold. The pressure in the intake manifold is affected by turbocharging output, engine speed, accelerator pedal input, ambient air temperature, and Barometric Pressure (BARO). A diaphragm within the MAP pressure sensor is displaced by the pressure changes that occur from the varying load and operating conditions of the engine. Under normal operation, then the lowest pressure that can exist in the intake manifold is equal to the BARO. This occurs when the vehicle is operated at idle or when the ignition is ON while the engine is OFF. The highest manifold pressure occurs when the turbocharger output is high. The manifold pressure range from 58 kPa (8 psi) when pressure are low to more than 296 kPa(42.7 psi) when pressures are high, depending on the BARO.