Audi a3 sline

2017 a3 sline , since fuel line connector snapped , cars dpf went on done a full regene after the heater plug is flashing still no turbo had it checked only thing came back was the dpf done 4000 revs for 45 mins so a regeneration should been complete still no joy ? Had it checked only thing came back was dpf,  cars still on limp mode no turbo , anyone any idea what could be causing this cars just an ornament again , I refuse to go to audi its only done 48000 miles but every week there's another eml comes on never had as much bother with other cars