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
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.
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.
Skyrocket21 said:
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.
Ive got an option for IOS....and ive got an ELM 327 already....thankshow do you know it doesnt run on IOS?
Timmos1974 said:
Sorry to jump in the Thread but is DPF Monitor for VAG a good App?
Can it go back to 2012 golfs?
That's my app. Support depends on your engine code, which in turn is linked to the diagnostic protocol being used by your ECU.Can it go back to 2012 golfs?
Check your engine code against the list of known supported ones in the app description. If it's not found, get in touch and I'll check whether it can be supported.
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
As you suspect it could be full of ash, which won't burn off during a regen, although the mileage seems a touch low for that. Could it be possible that non low SAPS engine oil has been used? This would clog up a DPF pretty fast.
If the DPF can be removed then it can be cleaned with a low/mid pressure washer, ideally hot water and no chemicals. Start from the outlet side first and wash towards the inlet side, then reverse. I wouldn't bother with all the ultrasonic cleaning services etc.
I think Cummins now recommend cleaning out DPF's every 8 months, so it seems to be a valid process.
If the DPF can be removed then it can be cleaned with a low/mid pressure washer, ideally hot water and no chemicals. Start from the outlet side first and wash towards the inlet side, then reverse. I wouldn't bother with all the ultrasonic cleaning services etc.
I think Cummins now recommend cleaning out DPF's every 8 months, so it seems to be a valid process.
Did you get a resolution with this?
My 2016 (new to me) Tiguan (96k on clock) with a non-Dieselgate engine is doing a regen every 50 miles if predominantly driven around town. The best I've managed with motorway driving was 160 miles.
My Golf with the same EA288 engine easily goes 150-200 miles before regenerating in comparison. The Golf has 136k on the clock.
Only difference is the Tiguan takes AdBlue (which I've refilled recently). I've done an oil and filter change on the Tiguan to be 100% sure it had VW 507.00 type oil in it.
I'm wondering about arranging an off-car clean, the DFP on both cars is at circa 0.44l, I believe the maximum service life of one is 0.6l
My 2016 (new to me) Tiguan (96k on clock) with a non-Dieselgate engine is doing a regen every 50 miles if predominantly driven around town. The best I've managed with motorway driving was 160 miles.
My Golf with the same EA288 engine easily goes 150-200 miles before regenerating in comparison. The Golf has 136k on the clock.
Only difference is the Tiguan takes AdBlue (which I've refilled recently). I've done an oil and filter change on the Tiguan to be 100% sure it had VW 507.00 type oil in it.
I'm wondering about arranging an off-car clean, the DFP on both cars is at circa 0.44l, I believe the maximum service life of one is 0.6l
If the DPF has a differential pressure sensor, see what the reading is in VCDS.
It should be <10 mbar at idle and no more than 200-300 mbar higher up the boost and rpm range.
If the readings are a lot higher but the engine performs as normal, suspect the sensor. It won't fault code until it's wildly out of expected range for a certain duration. You would know on your butt dyno if the DPF was completely saturated.
It should be <10 mbar at idle and no more than 200-300 mbar higher up the boost and rpm range.
If the readings are a lot higher but the engine performs as normal, suspect the sensor. It won't fault code until it's wildly out of expected range for a certain duration. You would know on your butt dyno if the DPF was completely saturated.
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