Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2021EDGE SE, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 12 (ENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS (DIESEL))DIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONSDTC P259F - TURBOCHARGER A BOOST CONTROL POSITION AT HIGH LIMIT
2021 Ford Edge SE, 4WD
DTC P259F - Turbocharger A Boost Control Position At High Limit
2021 Ford Edge SE, 4WDSECTION DTC P259F - Turbocharger A Boost Control Position At High Limit
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2018 Ford Transit-350 HD, 2018 Ford Transit-350, 2018 Ford Transit-250, 2018 Ford Transit-150, and 2018 Ford F-550 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
P259F - TURBOCHARGER A BOOST CONTROL POSITION AT HIGH LIMIT
| For Transit | |||
| Description: | This DTC sets when the variable geometry turbocharger (VGT) setpoint is greater than a specific threshold, the actual VGT position is less than a specified threshold, and the VGT control limit is greater than a specified limit. | ||
| Possible Causes: |
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| Diagnostic Aids: | The presence of this DTC may indicate the vehicle is operating in derate mode and may experience a loss of power. After repair, the vehicle may still display a system warning message. Drive the vehicle until the system warning message has cleared from the instrument panel cluster (IPC) message center. | ||
| For All Others | |||
| Description: | This DTC sets when the VGT command is greater than a calibrated value for the current amount of boost pressure for more than a calibrated amount of time. | ||
| Possible Causes: |
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| Diagnostic Aids: | The presence of this DTC may indicate that the vehicle is operating in derate mode and may experience a loss of power. After repair, the vehicle may still display a system warning message. Drive the vehicle until the system warning message has cleared from the instrument cluster message center. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Transit | GO to PINPOINT TEST AK . | ||
| All others | GO to PINPOINT TEST KA . | ||
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.