Remove foreign object. Repair air intake system and replace turbocharger if necessary. Foreign object in engine exhaust system. Remove foreign object. Repair exhaust system and replace turbocharger if necessary.
Carbon build up in turbine housing.
Clean housing or replace turbocharger - check engine operating procedures. Turbocharger rotating assembly binding or dragging. Damaged compressor wheel due to foreign object impact. Clean and repair air intake system as necessary. Damaged turbine wheel due to foreign object impact.