If his "DPF full" warning light is on, what extra information is a scan going to show? Personally, I would go back to the remap firm and question them as to whether anything they did could impact on the DPF regenerating properly. As a 2010 car I'm guessing yours will be a common rail diesel with the sophisticated injectors that provide a range of millisecond fuel injections with one designed to "burn off" the DPF. These later common rail engines, in standard OE form, do not routinely cause DPF problems unless only ever used for short journeys.