Firstly, Hi all - I've just purchased a RRS - 2015 (65 Plate 3.0d)

I've wanted one for years and eventually found myself in a position to acquire one...its beautiful!

Bad News - I've owned it 3-weeks (acquired from high end private dealer with full main dealer service history) and it's currently had the Engine Management light come on twice and had to go into the main dealer.

On both occasions they informed me it was due to the soot levels in the DPF and it had a forced regen performed.

On one other occasion the DPF light (amber) came on and I took it for a 30-minute run which cleared the light - following I assume a passive regen. No need to do anything further.

My frustration is that when the Engine Management Light comes on I have no ability to clear it and therefore have to fork out to go to the main dealer - both times they diagnosed the DPF soot levels. I had only covered about 250-300 miles between the fault re-occuring (10 days between them!).

My queries;

- If the DPF is getting full, why does the engine management light come on and not the DPF amber light? If it did, I could resolve the problem with a quick run on the motorway. Clearly the DPF light works, as it's activated once.

- Secondly, can the DPF regen if the engine management light is illuminated? If not, every time it comes on I would have to go and have it cleared and forced regen undertaken. Clearly I can't do (or afford) this every single week!

I'm so frustrated and disappointed and the whole situation!

Any advice would be much appreciated.

Last edited by Crobinson on Sat Jul 24 2021 1:07pm. Edited 2 times in total

Having just re-read the diagnostic sheet. It states "light caused by too many failed DPF attempts". Given I had only covered 250-300 miles it surely could have tried to regen that many times....and if it did why does the DPF light not come on rather than the EML.

Hi i had this with my van recently kept saying to go on a run to clear but never did, turned out to be the fuel vapouriser that helps to get it up to the correct temp, if your is that id go back to who you bought of to get it sorted at their cost under warranty.

Issue can be typically related to thtottle body getting stuck...known issue.

If your car has not had throttle body replaced previously it may well be causing dpf issues.

The valve can get stuck in open position and therefore car is unable to regen the dpf which then causes dpf to get full...also can cause some error codes starting with P such turbo in overboost condition..unable to regenerate dpf..or something along those lines.

Also if you bought of a trader then why are you paying to get it fixed...get them to fix it....under th consumer protection act 2015....they are obliged to fix it unless they can proove fault was there before and they made ypu aware of it at point of sale.

By way of update, I have now had the issue looked at by 2 different private mechanics (both specialise in Land Rovers). The second one has diagnosed the Throttle Body - so thanks Ash it look's like you were right! This is apparently causing a turbo overboost fault on the ECU which is also then causing the DPF not to carry out a passive regen. Still beyond me how a main LR dealer couldn't diagnose it.

I had written to the dealer under the CPA 2015 (very firmly) when the fault first developed (within 30-days of ownership) and they seem willing to pay to put it right.

Unfortunately the mechanic has also spotted the rear diff is leaking, so that will be then next job I'm insisting they sort also!

Hopefully it's just an unlucky start to my LR ownership and a bit smoother driving to look forward to.

In the unfortunate event it doesn't solve the issue I'll let you know!

Thanks again - appreciated!

Glad its sorted.
Do you know what DPF codes on the diagnostic it was throwing up? I'd love to know for an issue I'm helping someone with that is showing P2458-66 (28 ) DPF regeneration duration - Algorithm based failure - signal has too many transitions/events
Soot is building and not burning off properly i.e. not reducing down to low levels with a long run. Occasional amber DPF.
GAP IID being used to monitor readings.
I'd be very grateful if you could let me know the actual code(s) it was throwing up...
Thanks  Visitor from fullfatrr.com
* GONE. 2012 RR Sport HSE SDV6 Orkney Grey. Now being piloted by RRSTDV8
* GONE: 2011 4.4 TDV8 Full Fat. Amazing piece of kit.
* Current. 1974 Lightweight 2.25L petrol. Old skool
* GONE. Freelander GS TD4 Manual MY2013. Orkney Grey with privacy, cold and clearview packs, armrests (a must!) and a spoiler.
* GONE. Range Rover Classic '93 200Tdi Factory fit
* 1949 80" in family since 1975

Yes, I have a few of the codes which I photographed;

P246B: Vehicle conditions incorrect for Diesel Particulate Filter Regeneration
P0234-77: Turbo/supercharger overboost condition
P246B-00: J_14299_DTC-P246b
U0422-00: Invalid data recieved from the body control module

There was also previously a code for too many failed regens attempted, but dealer deleted before I could get the code.

Cheers. RRS 2015 (L494) 3.0SDV6 Stealth

 Visitor from fullfatrr.com
* GONE. 2012 RR Sport HSE SDV6 Orkney Grey. Now being piloted by RRSTDV8
* GONE: 2011 4.4 TDV8 Full Fat. Amazing piece of kit.
* Current. 1974 Lightweight 2.25L petrol. Old skool
* GONE. Freelander GS TD4 Manual MY2013. Orkney Grey with privacy, cold and clearview packs, armrests (a must!) and a spoiler.
* GONE. Range Rover Classic '93 200Tdi Factory fit
* 1949 80" in family since 1975

So, the EML illuminated again today

I have covered circa 450 miles since the throttle body was replaced. I saw the old one and he took a video showing it stocking in operation, so I don't doubt it was (or soon would) cause issues. However, I'm gutted this hasn't fixed it and the same fault code is showing again;

P0234-77: Turbo/supercharger overboost condition






Took it into the same garage this afternoon and he did an "Air Path Reset". Didn't charge, but I'm not convinced it will solve the issue - nor is he, but he said is should be done when the control unit is changed and he wanted to check it wasn't missed.

I'm now considering my rights under the CPA 2015 again as I just can't keep going on like this with a fault not one specialist LR dealer has diagnosed (correctly) yet by the look of it. Its had full LR service history and only done 38k!

Disappointed is all I can say. Not sure where to go with it next. RRS 2015 (L494) 3.0SDV6 Stealth

Chaps,

I'm not mechanical in the slightest, but idea's (from reading a lot online last night);

The MAF sensor was done with the new throttle control, so that's all brand new and ruled out as faulty.

1. Could it be the turbo actuator?
2. Does this model have an actuator arm (my guess is probably not and it's electronic)?
3. Does this model have a wastegate actuator?


It may not be related but I do notice a "clicking" noise when I accelerate (most noticeable in second/third gear when the engine is lightly quieter. As soon as I lift my foot off the accelerator it stops.

Thanks again. RRS 2015 (L494) 3.0SDV6 Stealth

Hey just wondered if there was any update on your nightmare journey.
I have bought a 2017 sdv6 and within 2 days had the EML illuminated that’s showed p0234. Took it to a LR independent today who cleaned map sensor & throttle body believing it to be fixed. Within 10miles it was asking for exhaust regeneration which I did and had the greeen light and cleared but then the EML is now back on. Also asking to be regenerated as well. My first private purchase in 20 years and feel gutted

Just had my throttle body replaced - it looked pristine, but it was sticking and throwing up that error (plus stopping the DPF from regenerating). I don't think just cleaning the throttle body would have had much benefit. RRS MY17 SDV6 AB
Evoque MY17 TD4 AB

I am having the same issue with my d300 rr velar ! Did you manage to fix this ? Please help !