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Often the problem with older / higher mileage (80k ish ) DPF is ash buildup. Ash is a byproduct of the DPF self cleaning process. The only way to remove the ash is to have the DPF professionally cleaned.

It's not really broken. Just part of the required maintenance sadly.
 

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Thanks. Sounds like a professional clean is the way to go. It isn't high miles (sub 30k), but most of it's like is town driving I'm afraid. Clearly the wrong car for us in hindsight, but I didn't know that at the time (obviously not advertised by dealers) and wasn't an issue in my 2012 D4.
 

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SarahStreet said:
Attached is a PDI immediately after a successful completed active regeneration. You will note that Exhaust Bank 4 (which is where the action takes place) is cooling down still from 630° when actively regenerating, to a normal driving operating temperature of circa 220°....still not enough to burn soot passively.

Of greater concern is that the soot loading has jumped back up to 22% within 5 minutes of the regeneration successfully completing. Which means that all the soot is not entirely burning off during aforementioned regeneration time of 21 minutes. This particular example vehicle (17MY) will only travel 126 miles between active regens on average, and is immediately hamstrung by the fact that the filter is one fifth full (20%) almost immediately after a successfully completed active regeneration.

To correlate, the algorithm used to measure the oil service counter (not distance/miles to next service) deducts 330 miles from every successful regen. Which is why for every 100 miles that the vehicle travels, it drops by approximately 3 times that in the oil counter. The oil service counter is NOT to be trusted, and is purely a gimmick to hide a multitude of engineering and technical failures.

Change your oil every year, come what may. You would be absolutely certifiable not to!
What software / app is that screen shot from please ?
 

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i see quite a few posts about the discos going straight into limp mode - (no amber warning) why is this??? surely its not right?
 

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woolz said:
i see quite a few posts about the discos going straight into limp mode - (no amber warning) why is this??? surely its not right?
You will see that on older DSs that have not had a software update or are driven permanently for very short journeys in traffic. Remember this is a forum for issues so you won't see the hundreds of thousands of cars that do not exhibit this issue.
 

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I have never had this issue on any of the DS's i have owned since the day they were launched.
Earlier ( none 2.2 engine ) models Pre software updates did have the occasional early service / oil change.
D240 now. So no issues expected.
 

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sandbox said:
woolz said:
i see quite a few posts about the discos going straight into limp mode - (no amber warning) why is this??? surely its not right?
You will see that on older DSs that have not had a software update or are driven permanently for very short journeys in traffic. Remember this is a forum for issues so you won't see the hundreds of thousands of cars that do not exhibit this issue.
Is it possible to for us view the SW version?
 

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woolz said:
Is it possible to for us view the SW version?
Not without specialist diagnostic equipment. But as long as your car has been serviced by a LR dealer at least once then you should have been updated. Look after the car and you'll be fine.
 

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woolz said:
i see quite a few posts about the discos going straight into limp mode - (no amber warning) why is this??? surely its not right?
Every time mine goes straight to limp mode
No warning
MY20 model
3 times in last 6 months
Software problems the stealer claims
 

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Jim Shoe said:
woolz said:
i see quite a few posts about the discos going straight into limp mode - (no amber warning) why is this??? surely its not right?
Every time mine goes straight to limp mode
No warning
MY20 model
3 times in last 6 months
Software problems the stealer claims
yes i see that a lot on here! what is your dealer doing about it? software update
 

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Good news! This time I got a JLR technician out. Did the software update (that the dealer said they'd done last time) and all is good.

Still I have my doubts that this will be the last of my troubles!
 

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I have the P049B EGR "B" Flow Insufficient Detected fault which will clear with a diagnostic tool but then comes back a few days later.
Never had any dpf lights.
I do fairly high miles with plenty of long trips.
MY18 Sd4 240bhp 37k miles
Does it look like my dpf needs replacing as well as egr cooler filter?
I'm out of warranty so am I likely to get any good will contribution? Full LR service history.
 

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Sounds like a stuck EGR valve. If so, that needs to be replaced and sometimes that can also have damaged the DPF.
 

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Nooooo! Thought I was out of the woods with the DPF issue 2 years ago. Long story short, vehicle was out of warranty by 2-3 days when I got the dreaded "Amber, almost immediate to Red" and limp mode. After the usual wranglings, JLR stood on and replaced DPF under a "1 time fix" agreement and fully stood the cost. Last night I got the amber and so was about to do a detour to complete the cycle, then Red and Limp mode within 30 seconds!

Aaargh! - any thoughts / advice? Is it Stealer time again (presuming I signed my rights away with the 1 time offer) or an independent fix?

TIA
 

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In addition to my own post above, I've had the time to read back a little. Would appreciate if someone ( @SarahStreet seems to be an expert / v. knowledgeable :) ) could confirm if I have this correct.......

As a reminder, I had the "Amber then Red" within seconds at 36 months and 2 days! JLR "stood on" and offered a "1 time fix". At the time, they changed the DPF and also (or I thought) updated the Software.

However 2 years and 1 month on, I have experienced exactly the same (was driving and got the Amber, turned to the Mrs and said "we need to do a journey......" by the time I'd turned back, Red and Limp mode!

So I'm presuming that 2 yrs ago, maybe the software wasn't updated and DPF only was changed. This DPF hasn't lasted as long as mileage / distances have reduced for COVID reasons.

So I'm thinking my course of action should be to go back to dealer and (after paying the usual £150-200) "diagnostic" fee and request details of the Software / if it was updated as part of the "fix" 2 years ago. As to where I stand for "accepting a "1 time offer" I'm not sure and guess this is where the wrangling will kick in!

So, even if they haven't / do upgrade the s/ware, maybe they're then exempt from providing another DPF. Does anyone know if the DPF's are completely useless after becoming "over-full"

Appreciate any advice / confirmation of my situation. Also read about still rejecting the car up to 6 years, so I could do that, but see far less hassle just getting the car fixed!
 

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There are a few companies that claim they can clean the DPF's. Some mobile ones that will come to your home. I think people have had mixed success with these companies. Maybe worth trying that before forking at £1500+ for a new DPF to be fitted as i doubt JLR will replace it again, once only seems to be their policy. Companies like dpfmidland.co.uk for example
 

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I was going to try these www.carbon-cleaning.co.uk next time my DPF blocked but cut my losses, sold the car and bought a petrol one before I had the hassle. if you do try a cleaning company please report back here on how you got on as it is an ongoing issue for many people
 

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OK - So a great result today (fingers crossed!). I took my car to the local independent (the excellent Land Ranger in Atherton), who plugged in and read the Soot / Ash content to be about 43% (too high for forced Regen). They cleared the car out of Limp Mode and sent me up the road for a drive. Returned, plugged machine in and reading was 0.8%, so job done.

Not sure what the long term prognosis will be - they seem to think a weekly 30 mile "Motorway" drive will keep things in check and have asked me to call in again next week to check the content reading.

Personally, I'm starting to think should we do a periodic forced Regen on these cars for peace of mind? (I think I've seen it as good as suggested earlier in this thread)
 

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ducatimally said:
OK - So a great result today (fingers crossed!). I took my car to the local independent (the excellent Land Ranger in Atherton), who plugged in and read the Soot / Ash content to be about 43% (too high for forced Regen). They cleared the car out of Limp Mode and sent me up the road for a drive. Returned, plugged machine in and reading was 0.8%, so job done.

Not sure what the long term prognosis will be - they seem to think a weekly 30 mile "Motorway" drive will keep things in check and have asked me to call in again next week to check the content reading.

Personally, I'm starting to think should we do a periodic forced Regen on these cars for peace of mind? (I think I've seen it as good as suggested earlier in this thread)
Effectively that's what the weekly drive does - but it's not guaranteed the regen will kick off on that drive. It'll only trigger if it hits the 200-250 mile threshold on the drive, otherwise you could have up to 6 days on non motorway runs when it attempts to regen and fails, then eventually completes a regen on the motorway on the seventh day. Bit of pot luck I'm afraid. So yes, a way to tell the car to regen would be good!
 

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You could buy a OBDLink MX+ - less than £100 plug it into the OBD port and set up a couple of dashboards that indicate when the DPF was due for triggering and even watch it doing it's stuff.
Fairly sure there is a thread on here about doing just that.
 
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