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P0299 Diagnostic Trouble Code Discussion for February 2011

Turbocharger Engine Underboost

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Trouble Ticket Help Requests for DTC P0299
Help Request Posted
2005 Ford Expedition Eddie Bauer 5.4L MIL Lamp on VIN: 1FMSU45P55
P0299: Underboost. ... diesel that keeps setting DTC p0299 (turbo under boost). Originally the vehicle had this could and a lack of power. Tests indicated at that time that the egr valve was the problem. Replaced the egr valve and now the truck has more than enough power. Approx...
February 15, 2011