Gremlin500 wrote:

Sorry guys, a “senior moment” there, you seem to have both worked it out.
CT, have you tried not using a profile, just selecting “all sensors” then picking from the entire list?
These are the sensors then available on my V6:

Click image to enlarge

EDIT: I need to update that pic sorry, the last sensors is now “miles since last regen”

Apologies for not replying!! ABAB's recent addition to the thread highlighted I never got back to you..

This didn't work for me and no matter what I try, I cannot show those particular sensors (similar to ABAB it seems). Regarding your comment about passive regeneration, I'm seeing the opposite with the sensors I CAN see (mostly soot%). When travelling on the motorway I can see this dropping with normal (maybe slightly heavy footed) driving, which is why I am having so many miles between regens I guess..

I've decided to ignore it completely

On my last trip to the UK. I monitored the values closely. I did manage to get 750km between Regens but part way into the holiday, I went for a motorway drive to get some passive Regens. It lowered the soot gram enough so that the active regen happened as expected. It is the lower-speed journeys that increase the soot lots.

The other thing I noticed is that the speed I am doing while the Active Regens does make a difference. For the last few regens I have had the cruise control set to 120 km/h (75 mph) the soot % never reset, and the value stayed at 100%. In the last regen, the cc was set to 140 km/h (87 mph) and at the end of the process the soot % dropped from 100 to 8 - which I was expecting it to. I am happy to live in Germany. SDV8 AB MY 2020
MINI Cooper S Cabrio
Kit: Jaguar XK140 (in progress - the website is link to build)

I would assume that rpm makes the difference. When I got the warning light (not red) I drove just a few miles (5-10) on the motorway in 6th gear at around 70mph.

I haven’t had the warning light since.

I think the regen process likes to engage fully on light over run, so if your cruising at speed and lighten the throttle, it’s an opportunity to shove more fuel down the pipe to get a burn.

I also suspect that the amount of fuel shoved down varies by speed as it’ll be factoring that the faster air flow from that speed will create more thermal cooling capacit, thus more fuel and a faster regen.

It’s clear from when I’ve watched it that regen rates appears to vary in a consistent manner with cruising speed. V8 or else ...

So I decided to get the engine oil analysed on my 2016 sdv8 4.4 mostly to check the dilution %.Here are the results

Click image to enlarge

And now in addition to all the monitoring, JLR is being taken to court in the UK and not just Australia over this issue:

https://www.leighday.co.uk/our-services/gr...g0EALw_wcB

Technically the DPF is not defective it works. So legally they need to be careful how they approach this.

BUT the architecture (design) is flawed, which contributes to excessive fuel dilution making it impossible to attain 16k miles between oil changes. 2018 SE SDV8 4.4 Byron Blue

CerebralThunder wrote:

@Gremlin500
It is Euro 5, not euro 6 (NO Ad Blue)

@Kot
It's a standard standard SDV6 engine as far as I know. I have tried many profiles from both Land Rover and Range Rover within the app but can't find any of the most basic sensors you mentioned. I'll happily revisit this but currently I am using the: Range Rover 2014-2015 L405 3.0 Diesel V6 profile.

Does the Euro5 type mean further distances between regens? Sorry for my lack of knowledge on this if it is a basic question..

Thank you all again.

Spridget wrote:

I had the same problem with my 2015 TDV6 I've ended up using the Jaguar F Pace TDV6 profile. This gives me most but not all of the things that I need.

Thanks for the information, I'll give it a try

So, my regens have been triggered at 50% inferred or 20grams of soot for months now and distance between regens about 190miles. This week I did a 250 mile run and the % figure crept up to about 70 and soot at about 25g. No alarms and no regen. I stopped for a coffee and a de-stress and on starting off again it went straight into a regen. Great! and about 250 miles since last one. On the return journey, again no regen and soot at 80% and 30g ......no regen and 340 miles since last one. I thought retirement was all about relaxing and pruning roses..not megga stress situations. Anyway, today I started the car and the amber light came on, followed pretty quickly by the red one. Called the AA and they did a forced regen but curiously the soot was down to 6g when it started so the AA man thought it had done a regen but tripped the alarm in before it finished, the engine was stone cold. All back to normal now but I just wonder what it was all about. I'll be watching it like a hawk the next time it comes around but just wondering if anyone has any idea what would stop a regen from happening? My Icarsoft and the AA man's kit didn't show any faults.
Now for a pint and a lie down in a darkened room.

Since I had the DPF replaced under warranty and started using the kit to monitor regens, I have used Shell v-power diesel only.

The grams I see are about 16g/17g. For the percentage it only resets from 100%, if I get a good run after the regen process seems to have finished. I am getting 750KM (470 miles) which is the maximum between regens.

I don't know if the fuel has helped (the literature would say yes) or if knowing the regens has helped. If I have time in the summer I will take the EGR/doughnut apart to see inside. SDV8 AB MY 2020
MINI Cooper S Cabrio
Kit: Jaguar XK140 (in progress - the website is link to build)

Spridget wrote:

On the return journey, again no regen and soot at 80% and 30g ......no regen and 340 miles since last one. I thought retirement was all about relaxing and pruning roses..not megga stress situations. Anyway, today I started the car and the amber light came on, followed pretty quickly by the red one. Called the AA and they did a forced regen but curiously the soot was down to 6g when it started so the AA man thought it had done a regen but tripped the alarm in before it finished, the engine was stone cold. All back to normal now but I just wonder what it was all about. I'll be watching it like a hawk the next time it comes around but just wondering if anyone has any idea what would stop a regen from happening? My Icarsoft and the AA man's kit didn't show any faults.
Now for a pint and a lie down in a darkened room.

This did make me laugh But seriously check you have the correct profile just in case the soot calculation is different across each profile. See this chart, at 28.5g the Regen process is inhibited and the amber should be on at 24.5g red is on at 31.5g yet you state you were at 30g when you got home? with no lights!`If thats the case, Amber should have been on.
Must be a Gremlin or when you started in the morning you have a leaky hose? that can give you an amber and a straight red just after.

I only go by the grams soot now, the % referred level is still a mystery to me and not very accurate.
I usually get an auto regen around 20.7g and it switches off around the 5.5g mark.



the only thing I can think that could prevent a regen starting is speed below 30mph -ish and maybe fuel tank level, some people have quoted 1/4 tank but I have seen regens happening just before the fuel light has happened so its anyones guess. I have seen it go above 21/22 but I often then bring in the 2nd turbo which usually kicks it off. I guess it could also be a loose wire on a sensor?
I would love to know what the inputs are for the logic flow diagram etc 2018 SE SDV8 4.4 Byron Blue

I'm thinking that I might drive it too carefully and it needs a bit of a blast ,maybe in sport mode to get it going. The profile that I'm using is for the Jaguar F Pace. It's the only one I can get to give me exhaust temps.
I wonder where it gets the soot grams info from🤔. Is it a calculation using the DP sensor? If so it might be worth trying a new one. I think it's a Ford item and not very long lasting. A friend with a Cougar has gone through 3 of them.
Another long run on the cards for next week and I'm wondering if I can get Valium on Ebay.

You have a DTC code reader, it will tell you if you have sensor issues just scan and clear faults. Start car then stop, and do another scan, see if same faults appear. No faults then monitor. Does the basic Range rover profile not work for you regarding exhaust temps?
Maybe contact app developer explaining your issues he has been very helpful so far. Not sure the F pace profile is suitable in your case. The app developer would certainly be your next port of call.

Regarding the calculation would love to see details of the JLR algorithm, a Logic flowchart would be nice and also hopefully how the referred dilution is worked out. 2018 SE SDV8 4.4 Byron Blue

Oh Well. Ignorance is bliss... or was bliss. Did some checking with the icarsoft today and I have no readings from 2 of the exhaust temperature sensors. Bank 1 sensor 2 and Bank 2 sensor 1. Also one of the EGR valves seems to be stuck closed. I don't suppose any of the above will help my regen situation.
Just wondering if they are do-able jobs for an ancient, retired, Mechanical Technician. I've done EGRs in the past but can't even see these. It's bank 2 which I assume is the NS one but I'll probably do them both. I'll put a post on the maintenance section and see if anyone can offer guidance.
Cheers
Pete