DPF Monitor Odd Reading

[Goodwill]

Hi

With the DPF I get the bank1 depleted code. I've run a forced regen today, but the oil ash volume is 0.46g with the max stated at 100g.

Perhaps I'm missing something here, I think I must be, but that sounds clean doesn't it?

Before the regen I had a bit of a sooty exhaust tip FYI. Van has had a tune from 204 up to something else...240?? Runs as sweet as.

I recently tried some of this in another vehicle and it was noticeably quieter running. So I've just added some to the VW and same thing...smooth and noticeably quieter, not that it was noisy before.
Amazon.co.uk

 

[DXX]

Hi

With the DPF I get the bank1 depleted code. I've run a forced regen today, but the oil ash volume is 0.46g with the max stated at 100g.

Perhaps I'm missing something here, I think I must be, but that sounds clean doesn't it?

Before the regen I had a bit of a sooty exhaust tip FYI. Van has had a tune from 204 up to something else...240?? Runs as sweet as.

I recently tried some of this in another vehicle and it was noticeably quieter running. So I've just added some to the VW and same thing...smooth and noticeably quieter, not that it was noisy before.
Amazon.co.uk

Says ‘helps restore worn surfaces’ on the can, must be magic, well worth the money.

 

[Goodwill]

Says ‘helps restore worn surfaces’ on the can, must be magic, well worth the money.

I believe it is actual magic and sure all I'm feeling is a massive placebo attack, proving that I'm really thick n stupid, along with all those other placebo idiots who have imagined the same thing. Good job there's a few of us idiots out there or these people would go out of business.

 

[JamieM]

Another quick update, took the van on holiday towing caravan, which the dealership advised would be perfectly ok, and it was. Did approx 600 miles towing a 1.5t caravan, and 500 miles or so normal driving. The van never missed a beat, although not sure if the 27 average mpg is reasonable, the only thing I noticed is oil level is now down to halfway between min/max, so I’m guessing that’s around 0.5 liter over approx 2000 miles.

DPF monitor now saying 1,635 miles / 2,941 mins (50 hrs) since last regen, but no eml’s or any other signs of any issues.

It’s going into the dealership tomorrow for them to investigate whether there’s been any maps/deletions/blanking etc on the emissions system, and advise what they are going to do about it, will post another update once I know …

 

[JamieM]

Update:
What they did - I had to work hard to get any details, all quite vague, but …
They updated ECU to latest standard software, saying that would overwrite any previous maps if they existed. They told me they can’t tell me if it had any previous maps, which I’m not sure I believe, however they have assured me there are none now.

They replaced the EGR valve with a new one, not the cooler, just the valve, so I assume they found that to be clogged with soot.

I asked what they did re the adblue (previously showing - - - - km range), they said nothing, it’s all working fine, there are no errors showing, and that IF it was previously mapped out the software update will have reinstated it.

They carried out a forced regen to clear the DPF, so again I assume that was fairly clogged up. He did say that if the forced regen doesn’t clear everything, they would replace the DPF, but, he says it’s now cleared and working fine.

I’m now waiting for some issues in the near future, because I don’t believe it’s that simple to reinstate the emissions system …

 

[Howzat]

So are you seeing an adblue range now?

 

[Sasquatch]

I’m now waiting for some issues in the near future, because I don’t believe it’s that simple to reinstate the emissions system …

I understand your disquiet. If the van had recived a software systems delete there would have been a reason for it, I'm sure.

Fingers crossed for you.

 

[JamieM]

So are you seeing an adblue range now?

The service manager says all sorted but not sure myself yet, had conversation on phone with them, I’m picking van up tomorrow unless they’re not finished yet, then it’ll be Monday, but will plug into Carista/VAG DPF etc as soon as I pick it up and see what the craic is…

 

[Howzat]

I asked what they did re the adblue (previously showing - - - - km range),

If the adblue is active you shouldn't be seeing the above anymore but something like 6000km. I presume that what you saw before was on the MFD so what does it show now?

Oops, just realised you aint got the van yet. Check the MFD like I said before you drive off.

 

[JamieM]

I understand your disquiet. If the van had recived a software systems delete there would have been a reason for it, I'm sure.

Fingers crossed for you.

Yeah, not sure Sasquatch, I see a lot of people online seem to be doing it as a preventative measure these days. Van has 1 previous owner and only at 29k miles when I got it from the dealership. Don’t know the previous owner but was told he was a VW enthusiast that used it to tow his vintage VW bus to shows etc. It sure drove fine the way it was, but not knowing what had been done to it was giving me the fear in case something major went wrong when it goes out of warranty …

 

[JamieM]

So are you seeing an adblue range now?

Yep, now seeing Range - 4500 miles

 

[JamieM]

Drove it home 40 miles, running very well, and VAG DPF now sees the relevant data …

 

[Howzat]

Yep, now seeing Range - 4500 miles

Happy days. Just dont overfill going forward. I'm only adding 5 litres when the 1500 mile warning sounds then checking it registers. Such a relief when it does. Sad but true.

 

[JamieM]

Hi guys, the saga continues …
Took the van out for a proper drive today with DPF Monitor running, first opportunity since repair work carried out, and drove it until I witnessed a regen happening. The regen behaved as `I thought it should, e.g. started the regen when the soot mass calculated hit 30g (240 miles since previous “forced” regen) , and ended approx 20-25 mins later showing 0 miles and 0 mins since last regen, however, it’s reset and started the next cycle with 8.8g soot mass (30%), so hasn’t fully cleared the DPF. Should that number have reduced further ?

2nd issue, and perhaps most concerning …. Minutes before the end of the regen (and also quite close to home thankfully), I was travelling up a reasonably steep hill and got a beep and a flashing red coolant warning light on lower dash, with message flashed up on the MF`D saying “Coolant - Check User Manual’. I ran a check with Carista immediately but there was no fault codes, just the red flashing temp light on the dash. I stopped when it was safe and had a look under the bonnet, engine was very hot having just finished a regen so didn’t attempt to mess with the coolant tank, but could see it was sitting on minimum. I reckon maybe the steep hill was enough to tip the level below a low coolant sensor, hence the flashing light.

I didn’t specifically note coolant level before starting off, just glanced at it when checking the oil and it looked ok, and VW had put 7 litres of coolant in it after replacing the egr valve the week before, so I’m fairly sure it was at max, or somewhere close to max.

I didn’t have any coolant in the van, so since it was just sitting at minimum I drove it home. The red flashing light had disappeared when I restarted the engine, and it didn’t seem to use any more coolant by the time I checked it, still hot, at home, it was maybe slightly below min and the engine would have been a bit cooler by this time.

I checked under the bonnet again and hour or so later when everything had cooled down and the coolant level is sitting approx 1 inch below min. There’s no obvious sign of any leaks in the engine bay or under the van, so no idea where it’s gone.

Any thoughts ?

Despite the above, van is still driving like a dream, very smooth …

 

[mmi]

started the next cycle with 8.8g soot mass (30%), so hasn’t fully cleared the DPF. Should that number have reduced further ?

Perfectly fine - the active regen cycle is from 30 to 9 grams on this engine. The 30% is just because the VAG DPF monitor app expects to reach 0 g which doesn't happen on this engine. In the app you can adjust the grams for 100% but unfortunately not for 0%.

The reached 8.8 grams was because of passive regeneration - the DPF was actively regenerated (kept hot) down to 9 grams and after that it was still hot enough for some time to even further reduce the soot counter.

VW had put 7 litres of coolant in it after replacing the egr valve the week before, so I’m fairly sure it was at max, or somewhere close to max.

Possibly they didn't bleed the system properly leaving air in the system which now escaped. Fill it and monitor the level (e.g. cold).

I ran a check with Carista immediately but there was no fault codes, just the red flashing temp light on the dash.

Correct. Not recorded as a engine fault.

 

[JamieM]

Perfectly fine - the active regen cycle is from 30 to 9 grams on this engine. The 30% is just because the VAG DPF monitor app expects to reach 0 g which doesn't happen on this engine. In the app you can adjust the grams for 100% but unfortunately not for 0%.

The reached 8.8 grams was because of passive regeneration - the DPF was actively regenerated (kept hot) down to 9 grams and after that it was still hot enough for some time to even further reduce the soot counter.


Possibly they didn't bleed the system properly leaving air in the system which now escaped. Fill it and monitor the level (e.g. cold).


Correct. Not recorded as an engine fault.

Thanks once again mmi, makes sense …

 

[JamieM]

Update - topped up coolant with 520ml of the “appropriate coolant” and went for a run, all good and no further loss, so fingers crossed

If anyone wondering, coolant was pink, handbook says G13 or G12++ which is purple, queried with VW, they now use G12E (G12 EVO) which is pink.