Nissan Qashqai in from a trade customer as car would not even run due to DPF (Diesel Particulate Filter) totally blocked, reading a pressure of 2500mbar. Diagnosed the reason for DPF to be blocked and rectified the faults found.
We carried out our 3 stage clean on the Dpf and got the backpressure down to spec (2mbar at idle from 2500!) Which shows how effective the Dpf doctor cleaning process is!