DPF Regenerating Every 50 Miles
Discussion
I have an issue with my 2.0 TDI. It performs a DPF regen every 50 miles or so which is happening almost every day now. There are no fault codes with the car and it drives perfectly. I did notice that when I checked the capacity with VAG DPF yesterday morning it was stating 47% full. Later on in the afternoon when I went on a short journey in the car a regen started and when I checked VAG DPF it was showing as 100% full. Not sure what would cause a jump of capacity of almost 50%.
Anyone any ideas what maybe going on? Below is an image from VAG DPF during the regen and when it had completed.
Anyone any ideas what maybe going on? Below is an image from VAG DPF during the regen and when it had completed.
SteBrown91 said:
Or a faulty themostat? If the car isnt getting hot then it will be running on choke all the time and all that extra fuel being burned is being emitted into the DPF
Interesting theory... Although that would still be a gradual process of filling the DPF just a lot quicker than usual. This literally jumped from 47% capacity to 100% almost instantly.
Edited by Chrismawa on Monday 2nd October 11:45
Skyrocket21 said:
I'd hazard a guess at the pressure sensor, the optimum regeneration parameter I've found running similar engine is 4th gear 60-65 mph on a dual carriageway, you'll see the dpf go above 600c, the post injection works well too. Usually do 300 miles plus between, this is running a diesel gate fix, map, which needs removing. I'd look to over fuelling if it's not the pressure sensor, remember it won't re-gen with an engine light on.
It would interesting to know your mileage, because you're ash residue is 0.14 l, ours is 0.11 l at 120k, the vag dpf screen you can just press those blank tabs to activate them again.
To the above poster use VAG DPF on android, google play store (won't work on IOS Iphone) and buy a ELM327 bluetooth transmitter for the obdll port, I use this one, https://www.ebay.co.uk/itm/153888438918.
Mileage on mine is 96k. Will switch the sensor and see if that does anything. How would I know if its over fueling? Everything else is fine with the car, MPG is good, performance is good, no fault codes... just the DPF regenerating stupidly often...It would interesting to know your mileage, because you're ash residue is 0.14 l, ours is 0.11 l at 120k, the vag dpf screen you can just press those blank tabs to activate them again.
To the above poster use VAG DPF on android, google play store (won't work on IOS Iphone) and buy a ELM327 bluetooth transmitter for the obdll port, I use this one, https://www.ebay.co.uk/itm/153888438918.
Jarinex39 said:
Did you sort out what it was? Have a same issue.
I haven't yet, the car is booked into the DPF Doctor next week. I suspect its either blocked or full. If so I'm hoping a manual clean will rectify the issue.It's had a forced regeneration already carried out and a new pressure sensor fitted. Both did nothing, well the forced regeneration did temporarily increase the capacity of the DPF but slowly it has gone back to normal.
Edited by Chrismawa on Monday 12th February 15:13
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