Off-car DPF cleaning is an expensive and time-consuming process. This video shows how to do it in situ, and it costs less than £20. I had already done this process on this car about 4 months prior, so there is hardly any blockage, but I thought I'd explain the process on video.
14:40
18:44
36:54
187:15
17:03
11:16
19:31
19:05
30:42
204:38
19:11
35:35
25:45
13:16
23:10
24:04
9:05
12:29
23:49
27:05