Engine-Codes - Chevrolet - P0299 Chevrolet

P0299 Chevrolet Code - Engine Underboost

- Code Popularity: 98,743 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC P0299 Chevrolet?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Turbocharger Vane Position Actuator
  • Air leaks between the turbocharger and the intake air flow valve
  • Airflow restrictions in air ducts or air filter
  • Ice or debris in the induction system
  • Leaks at the Positive Crankcase Ventilation (PCV) system
  • Faulty Turbocharger

Code Tech Notes

There are Factory Service Bulletins for the following Chevrolet models:

2010 Chevrolet Express
2011 Chevrolet Express
2011 Chevrolet Silverado
Chevrolet Factory Service Bulletin OBDII Code P0299

Chevrolet Cruze 2011-2016
Chevrolet Sonic 2012-2019
Chevrolet Trax 2013-2019
Chevrolet Factory Service Bulletin OBDII Code P0299

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How to Fix the DTC P0299 Chevrolet?

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 pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0299 Chevrolet code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P0299 Chevrolet Code Mean?

The Engine Control Module (ECM) uses the Manifold Absolute Pressure (MAP) sensor input and turbocharger actuator output to control the amount of engine induction system boost pressure. The ECM calculates a desired boost pressure value and monitors the actual boost pressure. If the difference between the actual boost pressure and the desired boost pressure is less than or greater than a calibrated threshold level, the ECM detects that the amount of detected boost pressure is out of range. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the difference between the actual boost pressure and the desired boost pressure in the intake manifold is less than the expected range for 12.5 s. The 12.5 s time is not continuous but cumulative. The timer may sum up a heavy load condition obtained during different maneuvers.

P0299 Chevrolet Code - Engine Underboost

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