Mercedes W204 HELP!

Mercedes » C-Class » 2008-2015
Problem Description

I have a C 220 Coupe (w204) Facelift.

I have been having trouble with my dpf, I have two fault codes.

p246309 - dpf sooth content high

P245512 - I have no clue what so ever on this! PLease help!

 

I am using iCarsoft i980 to read the faults...