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S80 '06-'16 / V70 & XC70 '07-'16 General Forum for the P3-platform S80 and 70-series models |
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New DPF questionViews : 1383 Replies : 30Users Viewing This Thread : |
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Dec 26th, 2023, 07:54 | #11 | |
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That's just the beginning of the list Also: 1.check for correct voltage & ground continuity at the DPF pressure sensor (I wrongly called it a switch before) 2. check the DPF pressure sensor pipes are clear - if you have access to a hand vacuum gauge you shouldn't be able to create any vacuum, if you can it's blocked, clear them out. 3.check live data for DPF pressure sensor with ignition on engine off - you should be at zero. If there's only a slight deviation from that figure you could try performing adaptation for that sensor(as if a new one had been fitted) If its reading high, replace it but not until you've checked point 2. |
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Dec 26th, 2023, 08:20 | #12 | |
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Hi
Quote:
Although mine looked intact, one had burnt through (near to the DPF) but looked intact because of the outer protective sheath / covering. It was allowing some pressure to go through to the sensor but not the full pressure. Therefore confusing the system.
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Dec 26th, 2023, 10:07 | #13 | |
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As with any diagnostic work the engine must have the latest software... or you could be chasing yourself around in circles getting nowhere.
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Dec 26th, 2023, 10:34 | #14 | |
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I recently found out that within Citroen/Peugeot DPF software there is a theoretical end of DPF life mileage written in, even if it is functioning perfectly well....maybe Volvo software operates similarly. |
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Dec 26th, 2023, 21:22 | #15 | |
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Dec 26th, 2023, 22:01 | #16 | |
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My wife runs a Mini Paceman 1.6d with BMW N47 engine. It's not a nice type of engine - I religiously keep an eye on soot levels, DPF pressure and how often it regens. Touch wood, despite the frequent short journeys my wife inflicts upon it, the DPF system remains healthy. Its run on premium fuel and Redex diesel additive specifically to lower temperatures the soot burns at and once a month I take it out for a good run. I'm interested to see how the OP gets on though and also why the DPF had to be changed in the first place. |
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Dec 28th, 2023, 08:57 | #17 | |
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DPF pressure sensor reading 5 at idle up to around 47 at idle, so that would seem okay. Additive tank now at 14/15 and counter reset, though I cannot 'activate' the pump in Vida. Info page says pump only becomes active after adding diesel to fuel tank? Perhaps someome knows more on this but it makes sense to me. I have also reset counter for new DPF again but couldn't see anything to reset soot counter? I did take a reading of soot mass which was around 1.0g. Car is now revving above 3k but throws the occaisional EML but no limp mode. Vida says these DTCs are: MAF reading in range but lower than expected. I have checked everything is 'tight'. Air Filter looks grubby so I'm gonna swap that out and clean MAF. Other one is DPF efficiency below threshold (Bank 1). Again, going to clean up sensors again. Thought I did this when changing out DPF but must have miised one. If anyone knows which sensor bank 1 relates to that'd be great. Thanks to all for help so far |
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Dec 28th, 2023, 09:40 | #18 | |||||
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Hello
Working down your list then... Quote:
Have you considered taking it for a run with an assistant and see what figures are shown then? If no assistant, I think there is a live data record facility in Vida Quote:
Yes, dosing does take place when the system recognises fuel was added. There will be a manual activation but for now you could just monitor the level via Vida to confirm pump is work...arguably the fact it was empty suggests its fine. Quote:
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Are they the only DTC's ? Quote:
Bank 2 is downstream of the DPF and reports conditions after filtration, such as if soot is getting past, ie cracked DPF from too many/wrongly applied forced regens. You tend to get soot in the rear tail pipe when that happens. Out of interest, why did you change the DPF? Last edited by 37 RUBY; Dec 28th, 2023 at 09:58. |
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Dec 28th, 2023, 10:09 | #19 |
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At the time (Before I had Vida) everything in my limited knowledge was pointing to a clogged DPF, the car is close to 100k, 12 years old too so it seemed like the right thing to do. With hindsight I might have held fire. I've still got old DPF, so I may run some off car cleaner through it, stick it back on and go from there. My driving at the moment is not suited to a diesel, lots of short trips but as my 3 pot Focus's so called 'Lifetime' wet belt let go at 90k miles its a case of needs must.
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Dec 28th, 2023, 10:12 | #20 | |
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Thanks again for all the help/advice. |
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