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Hi all. I have a V40 D3 on a 63 plate (5 cyl engine). Soot filter full message on dash last week, so took it up the motorway for 40mins to try to clear the message, but no joy. So, I got one of those DPF cleaning companies to come round. They read the fault codes and concluded that the DPF was not blocked and the fault was with the pressure sensor. So, I took the car to a reputable independant Volvo specialist, who confirmed the fault message and the fact that the DPF was not blocked. He changed the sensor, but the message remained, until he did a forced regen of 1.5 hours duration! Surprise surprise, three days later and the message is now back. I've read a couple of posts from people with similar issues, but none of them conclude with what the actual fault was, so I'm hoping over the fullness of time, there may be others who have had experience of this issue and are able to advise? Thanks!
 

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our C30 spat a warning light on, scan showed dpf blocked, dpf pressure sensor fault, air flow sensor erratic, so replaced both sensors, forced regen and cleared codes. came back on and so repeated 3 times before volvo scan showed fuel pressure was too high. new fuel filter, no problems since. refitted the old sensors, returned the new ones...
 

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I had the same issue with my D3 5 pot. Bought a new Pressure sensor, even took the dpf off and manually cleaned it. Wasted time and money on these cleaners, and nothing worked. Did a few regens even a 25km drive, and the message was back, no matter what I did. Went to Volvo, where I know people, head mechanic told me the DPF is done, and needs to be replaced. Their actual live span is only 120 000km. But a new one is too expensive.

Hence I removed the DPF again, cleaned it out, and did a DPF delete, and tune at the same time. No more issues, it's been 3 years later. And still no smoke......
 
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