Had the "Engine Malfunction " message yesterday so plugged in Forscan as soon as I got home and got a code of P244C which read Exhaust temperature to low for a regeneration, my immediate thought was dread as the van was booked in for Mot the following day, anyway last time I got this message my DPF ended up blocking and the garage said it needed replacing which I did ....so thinking my DPF was blocking up I done a static regen that completed but said soot levels are still to high . Worried about my Mot I looked over wires ect and all was ok so I ended up taking the vaporiser out which I bought new last year and found that it was completely blocked with carbon
I cleaned the carbon out using a sharp knife refitted it and the Van's regeneration completed and soot levels dropped
I pulled the vaporiser out of my old DPF in my shed and guess what? That was also blocked so I basically bought a new Dpf when all I needed to do was unblock the vaporiser! Just thought I'd put this to help others with the P244C code , hope this helps......Oh and van passed MOT with flying colours