[triggerhappy21]

New user, just joined looking to tap into some of the knowledge here!

I've been having the usual DPF woes on my 100'000 mile E91 LCI 335d:

- Glow plug error, didn't realise this was stopping my regens. Basically went for 2 years or so (all over lock down) without regen'ing.
- DPF warning then appeared. Went into garage, glow plugs, controller & swirl flap delete all done.
- Good for 6 months, then DPF warning again. Back to garage, lots of low voltage error were restricting some startup processes. New battery, car felt great.
- Last week, DPF warning again. Purchased Veepeak OBD2 scanner & Bimmer-tool app. Great bit of kit. Out for 2hrs yeaterday. Cleared codes, forced regen.
- Initially it was struggling, soot mass was 60g, it would creep down, then shoot back up to 60g again! Eventually exhaust temp shot up to 620°C and I got the soot mass right down, and it stayed down around 14g.
- 480A fault code keeps returning though.

Bimmer-tool figures are:

Ash mass - 2.4g (seems too low?!)
Soot mass - 14g (creeps up every couple miles, is that normal?)

DPF back pressure test:
Idle - 2mbar
2000rpm - 10mbar
3000rpm - 54mbar
4000rpm - 67mbar

Does the above look OK from your experience? Is there any suggestions to stop the 480A fault returning. The pressures seem too low to be triggering a fault. From what I understand the car wont regen if the fault is present. I don't fancy having to force regen for the rest of the cars life.

Thanks in advance.