My ''12 Alltrack CFFB engine code has failed to regen the DPF a number of times, even on a 60 mile motorway run. I don't have any warning lights yet but have read the codes with VCDS and it confirms that the DPF has failed to regenerate. The only fault I can find relates to Secondary Water Pump failure, could this block regen? I a B6 with a failed secondary pump for years and it never failed to regen.
Many thanks
Does Secondary Water Pump Affect DPF Regen CFFB?
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