I’ve been running a Signum 1.9CDTI (150) with a Spider Tuning Box. The other day the Car/Spanner light came on indicating a fault code of :
P242F - Diesel Particulate Filter Restriction - Ash Accumulation
This had the car running in limp mode? with loss of acceleration etc.

I mostly do town journeys stop/start of under a mile 4x a day all week. and with a DPF is probably just my problem, however at the weekend I go on longer journeys.

Is it advisable to manually start a Regen of the DPF through a OBD (on board Diagnostic) tool every so often or just remove the Box.

On removal the light stayed on and limp mode (loss of power) till it cleared after a motorway run, however I'm a bit apprehensive on refitting at moment. It’s on setting 5 so not overdoing it in that respect and the gains are very noticeable before this new problem. Any advice help would be appreciated. Maybe its not for me If so theres one for sale (reluctantly) as I don’t do significant miles.