My Transit Custom has DPF issues but the garage can't find a fix, what can I do?

I have a 2016 Transit Custom that is having repeated DPF issues. The garage clean the filter, and reset the code, but within 50 miles the van says the filter is at its limit again. This has happened three times now, and I obviously want a more permanent solution. The garage advertise themselves as Transit specialists, so I don't know what to do next. I do mixed urban/motorway driving, but even if I was only doing short trips surely it shouldn't block up so quickly?

Asked on 22 December 2023 by Villager

Answered by David Ross
DPF issues can have many causes, but a filter that has been cleaned and code cleared should not be clogging up again within 50 miles unless there is another issue present. It may be that a fault elsewhere in the engine or exhaust system is preventing the DPF from regenerating, which would cause it to block more quickly. If the vehicle has not had a full service recently this is a sensible first step as oil quality can affect the operation of some diesels with DPFs, but you may also wish to consider trying a different Transit or diesel specialist - you can search for one on the Honest John Good Garage Guide here:
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