trouble codes on 2003 Mitsubishi Montero

pls help dont know what to do, i get this trouble codes
99-2005 mitsubishi montero/pajero shogun from japan, diesel 4m41 engine 3.2L turbo
41 thrt val sol
31 can comm.
22 vgt cont. prs.
51 egr pos snsr.

Asked by for the 2003 Mitsubishi Montero
Pajero 4M41 year 2004 31 can comm
52 vgt cont prs
51 egr pst snsr