2006 Ford F-350 P0299 Fault: Low Power and Turbo Whine at 1800 RPM - Diagnosis and Fix

Model: 2006 Ford F-350 Fault Code: P0299 Posted: 2017-01-31 17:36

My 2006 Ford F-350 is exhibiting a loud whining noise at idle. After removing the turbocharger, I found radial play of 0.024 inches—exceeding the specified limit of 0.02 inches—and metal shavings inside the turbine housing. The turbo was replaced, but the issue persists: the whining noise now only occurs at 1800 RPMs and the vehicle shows significantly reduced power. The active diagnostic code is P0299 (Turbocharger Pressure Sensor Circuit Malfunction or Turbocharger Performance Issue). I have followed standard troubleshooting steps but cannot resolve this problem. Any insights into potential causes or solutions for this specific 2006 Ford F-350 with P0299 and low power at higher RPMs would be greatly appreciated.