Home > Maintenance & Mods (L322) > What to do if your DPF is blocked... |
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Chel322 Member Since: 06 Mar 2024 Location: Lymington Posts: 5 |
Thanks, okay will forget the dpf cleaner in a can.
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6th Mar 2024 8:00am |
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GGDR Member Since: 26 Nov 2016 Location: London Posts: 3542 |
hi Luke sudden Red DPF warning usually mean a boost leak. Donut hoses, throttle body seal are typical culprits. Once you find the leak you can do a forced regen Cheers, Greg
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6th Mar 2024 8:22am |
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Range Rover L322 Member Since: 03 Sep 2019 Location: South West Posts: 329 |
100% agreed - sounds like a leak somewhere on the induction system. I recommend a high pressure smoke test - it is the fastest way to solve it and will find the problem 90% of the time. Find an indy who knows what he is doing. You're in Hampshire - Glenrands or Roy Hardy in Wimborne - see my signature - both very good. Cutting and cleaning the DPF should be last resort and is very unlikely to be your problem. I'll post a diagnostic procedure we compiled. Good luck and come back to us - there are some people here with very good understanding of DPFs. . 2012 L322 4.4 TDV8 AB low mileage - a peach 1986 V8 Defender 90 County ex-Swiss Army - Red everything.... My preferred Independent: Roy Hardy. R & B AUTOS LTD, 20 Brook Road, Wimborne, Dorset, BH21 2BH 07500 866775 (Ex LR Chief Technician) Last edited by Range Rover L322 on 6th Mar 2024 10:27pm. Edited 2 times in total |
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6th Mar 2024 9:57pm |
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Range Rover L322 Member Since: 03 Sep 2019 Location: South West Posts: 329 |
Here is an old post from 2 years ago which will give you some background and a crash course on DPFs!
2012 L322 4.4 TDV8 AB low mileage - a peach 1986 V8 Defender 90 County ex-Swiss Army - Red everything.... My preferred Independent: Roy Hardy. R & B AUTOS LTD, 20 Brook Road, Wimborne, Dorset, BH21 2BH 07500 866775 (Ex LR Chief Technician) |
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6th Mar 2024 10:12pm |
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pcourtney Member Since: 14 Jan 2020 Location: Stansted Posts: 804 |
It's helping some owners - EGR Blanking plate and remap etc
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7th Mar 2024 2:25pm |
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Chel322 Member Since: 06 Mar 2024 Location: Lymington Posts: 5 |
Thank you all, I will report back and let you know how I get on.
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8th Mar 2024 8:33am |
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Chel322 Member Since: 06 Mar 2024 Location: Lymington Posts: 5 |
Well, good news. Oil change, service reset and forced regen did the trick.
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8th Mar 2024 3:36pm |
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Chel322 Member Since: 06 Mar 2024 Location: Lymington Posts: 5 |
Not sure attachment worked, only remaining fault is,
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8th Mar 2024 3:37pm |
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Range Rover L322 Member Since: 03 Sep 2019 Location: South West Posts: 329 |
OK sounds promising, fingers crossed. Some thoughts and pointers, bear with me:
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8th Mar 2024 11:31pm |
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SpitfireS Member Since: 10 Jun 2019 Location: Mainz Posts: 101 |
Question(s) for Range Rover L322: do you know the pressure differential pressure sensor reading for a (your) new DPF?
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13th Apr 2024 6:30pm |
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uplandvilla Member Since: 07 Mar 2024 Location: East Sussex Posts: 13 |
Many thanks to GGDR, Range Rover L322 and others for their extensive and extremely helpful posts. I must admit the post above was particularly reassuring and led me to believe that I may be worrying unnecessarily and falling prey to the "DPF paranoia." However, I have a specific question which I'm hoping someone can answer as a newbie to the DPF world. A bit of background: I recently upgraded our beloved 2004 4.4L V8 Vogue to a 2011 TDV8 Vogue SE and on the initial drive home got the Amber DPF Full warning. We weren't sitting in traffic. But it's impossible to know what the previous owner's experience was and whether this was to forecast some greater issue. To be honest, the DPF and oil dilution issues were perhaps the single reason I was on the fence whether to go for a TDV8. Fortunately my initial panic subsided after about a 15-20 minute drive on an A Road averaging about 40-50mph and the warning light disappeared. Subsequently and thanks to this thread, I have begun monitoring the soot levels and regens with Car Scanner Pro. From my limited 2 week experience, the active regens seem to kick in once the soot level is over 19g. And the best of approx 4 or 5 cycles I've monitored lowered the level from over 20 down to 4.71 at which point I decided I could probably head home. Previous attempts had brought the level down to about 10 or 11 before the "Incomplete regen status" went to 0 and the "Successful regen" counter clicked up, indicating it had completed. However, this time, even with the soot level at 4.71, the "Incomplete regen status" never changed from 1 back to 0 nor did the "Successful regens" counter click up. Ever since, the "Incomplete regen status" has remained at 1 and despite several more regen cycles as evidenced by the "Demanded regenerations" number going up, including one that went from 20.78 down to 10.59, I haven't managed to record another "successful regen" nor get the "incomplete status" to change. After about 65 miles of solid 50mph driving beyond that regen attempt, the 10.59 began to creep up so I pulled over at a service station and thought to read the error codes. That's when I discovered it had triggered a P2458(66) "DPF regeneration process - duration malfunction." That seemed to explain why perhaps it wasn't registering a completed cycle or that it had taken longer than the ECU would expect. I cleared that code but the "incomplete status" remains the same. Question is: is there any way to force the ECU to register that the regen is completed? And should I be worried about the P2458-66 error code if there were no other related codes? From what I can find in the Workshop Manual, it indicates you should check for related DTC's (which didn't come up) or in worse case that the DPF is full and needs replacing (which I'm hoping isn't the case). Many thanks in advance for your help.
Current: 2011 4.4 TDV8 Vogue SE Previous: 2004 4.4 V8 Vogue |
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10th May 2024 2:04pm |
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Range Rover L322 Member Since: 03 Sep 2019 Location: South West Posts: 329 |
Hi Upland Villa,
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10th May 2024 9:16pm |
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uplandvilla Member Since: 07 Mar 2024 Location: East Sussex Posts: 13 |
Hi Matt,
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11th May 2024 3:46pm |
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DrRob Member Since: 16 Apr 2015 Location: Petersfield, Hampshire Posts: 4300 |
As Matt quoted…if it clears on an Amber after a run then it’s working fine.
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11th May 2024 7:16pm |
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