P0299 BY FAULTY TURBOCHARGER BYPASS VALVE/ ECOBOOST F150 & EXPODITION
In this video I discuss how a failed TCBY valve, also known as a turbocharger bypass valve, caused a code P0299 "turbocharger underboost condition" to set in a 2018 Ford F150 equipped with a 2.7L Ecoboost. The valve got stuck in the open position causing turbocharger boost to be bleed off when the vehicle was not supposed to be doing so. This lead to the SES lamp illuminating and a lack of power upon acceleration.
Note: This situation can affect many of the Ford F150s and Expeditions equipped with an Ecoboost engine, 2.7L or 3.5L. And to my knowledge the 3.5L Ecoboost has been being used on the F150 from 2013 to present day, 2022. Also, the 2.7L Ecoboost has been used in later years on the F150 to present day. The Expedition equipped with the 3.5L Ecoboost can also be affected. I believe that the 3.5L Ecoboost has been in use of the Expedition from around 2015 to present day, 2022. The turbo systems on all of these vehicles are very similar and almost the same. However, there are some differences. So, as always verify everything.
GENERAL DISCLAIMER
Barbour's Auto Help is not responsible for any damage or personal injury incurred in the process of performing any auto repairs done by you the viewer. Automotive repair is extremely dangerous. Repair your vehicle at your own risk. It is the viewers responsibility to verify all information and procedures as outlined in YOUR REPAIR MANUAL AND OWNERS MANUAL FOR YOUR VEHICLE. Owning and using a repair manual suited for your vehicle is essential for correctly and safely performing ANY repair to your vehicle. Always wear safety glasses, protective gloves and heed all instructions for use applicable to any piece of equipment you may use. Due to circumstances out of the control of Barbour's Auto Help, Barbour's Auto Help makes no guarantee that by the use of the information given in this video a quality repair will be made. Barbour's Auto Help makes no guarantee that the information provided is totally complete, synchronized and accurate. Verify everything using an appropriate repair manual. Verify everything with your own research.
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