Where can the foreign matter come from to cause this code?

Question

This is on 2007 Dodge 3500 with a cummins 6.7

Answer 1

P2563 Turbo charger boost control position sensor perfromance

Foreign matter this would be the soot from the diesel fuel.At one time certain diesel from Dodge required a soot removal by injecting a cleaning fluid into its turbo charger. Soot would always be a problem with diesel engines