Engine-Codes - Ford - P0299 FORD

P0299 FORD - Turbo/Supercharger Underboost

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P0299 FORD Possible Causes

  • Faulty Injector Control Pressure (ICP) sensor
  • EGR system fault
  • Engine mechanical condition
  • Low oil pressure
  • Faulty Turbo/Supercharger

How is the P0299 FORD code repair?

Start by checking 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 Ford models:

2003-2007 Ford F-Super Duty
2004-2007 Ford E-350, E-450
2003-2005 Ford Excursion
Ford Factory Service Bulletin OBDII Code P0299

P0299 lack of power and turbo sticking on a 6.0 Powerstroke F250 diesel








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What is the cost to diagnose the P0299 FORD code

Labor: 1.0

The cost to diagnose the P0299 FORD code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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When is the code detected?

The Engine Control Module (ECM) has detected an error between the expected versus actual exhaust backpressure

Possible Symptoms

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

P0299 FORD Meaning

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.

More Information

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