Hi I have a 2007 A4 TDI 170, on Sunday I did a forced regen and got the Particle Filter Load Coefficient down to 11%. Since then I have done 73 miles and the dpf light has come on again. I have hooked the car up to VCDS tonight and got the following whilst idling:

Address 01: Engine Labels: 03G-906-018-BRD.clb
Control Module Part Number: 03G 906 018 AQ HW: 03G 906 018 AQ
Component and/or Version: R4 2.0l PPD1.3 G 9971
Software Coding: 0000072
Work Shop Code: WSC 01245 210 53446
VCID: 74E06BE9144A909E65-517E
1 Fault Found:


000665 - Boost Pressure Regulation
P0299 - 006 - Control Range Not Reached - Intermittent - MIL ON


Readiness: N/A

19:16:40 Group 067: Particle Filter (Exhaust Gas I)
147.7°C Temperature bef. Turbo Charger
115.7°C Temperature in Particle Filter
12.6 mbar Press. Difference Particle Filter
0 mbar Press. Difference Offset


19:16:40 Group 075: Particle Filter (Exhaust Gas IV)
147.7°C Temperature bef. Turbo Charger
123.9°C Temperature bef. Particle Filter
54.1 % Particle Filter Load Coefficient
84.7°C Temperature after Particle Filter


19:16:40 Group 068: Particle Filter (Exhaust Gas II)
54.1 % Particle Filter Load Coefficient
0.72 Particle Filter Carbon Mass
0.0 % Carbon Mass Learned Value


Can anyone advise as to why the dpf light has come back on so soon and possibly suggest any cause for this?

Many Thanks