Well I had trouble where your yellow circle is; this is the inter cooler boost feed into the throttle body. It could be the seal or the clip.

I wouldn’t worry about the other codes the top one a saying your Dpf is full so you will need to get that sorted once you plug the leak.

The four hoses circled in red can leak underneath or there can be cracks that are covered by the clips. Unless you get a white cloth or tissue and get it all the way around, don’t discount those yet. Cheers, Greg
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2011 Vogue SE 4.4 with lots of toys in Stornaway

Also the EGR is a 9 hour job so pipes first.

You really want a high pressure smoke test to see if there's a leak. The balance is so fragile that a pinhole or 5% differential in mixture can soot up the DPF, and being induction, they are sucking in so until that pinhole turns into a split it there might not be soot eternally yet

I had my mechanic do a high pressure leak test and no leaks were found...

Engine light is on too now, faults are DPF and temperature sensor EGR. Is there a possibility that the DPF is actually full? '17 Range Rover 5.0 Supercharged AB (Sold)
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I very much doubt your DPF is full. Get them to do a Pressure test. If it is getting full it will read c. 15PSI. Mine was reading 25g of soot and raised a yellow light (DPF full) but the pressure was less than 2PSI!!

I cant work out what your problem/cause is but I would check the sensor as it may be giving a false reading.

Hi Guys,
First, Greg, respect for all the troubles that you went through to put all the information together and also thanks for all the feedback from all of you guys.
Now, need your help with my DPF issue. I had RED warning few weeks ago. I had my car with my local independednt LR specialist (Landers, Houghton Regis) for few days to inspect. They have managed to clear red warning but they confirmed that there is an issue with DPF itself and it cloggs up really quickly. They need to cut it out, send it to do flush service and then they will be able to identify the problem. At this point they couldn't find anything else. They mentioned that DPF itself might be faulty. After nearly £1000 quote I have decided that I will try to tackle the problem myself. I have been quoted £380 by Greg's DPF specialist in Hendon. Also, I got myself IID Tool.
Yesterday yellow warning appeared on dash. Connected my IID tool and soot level reached 24. I have decided to chceck everything before going on motorway, give it a good clean, refit four pipes on plenum etc.

Click image to enlarge

Hi Adam, I have been down the path you appear to be on at the moment and the first thing I would advise is to get a high pressure smoke test carried out to see if there are any leaks on the intake side. From what you describe it sounds more like a leak than an electrical issue. 2011 TDV8 Vogue SE

Hi Adam,

Note that - as dennij says - it's a high pressure test needed.

I bought a machine (low pressure) which didn't detect my air leak.
I'd say it is an air leak which the HP smoke 'should' find.

Your differential voltage looks ok. Making this extreme soot increase odd.
Something more than 0.9v means low flow and this is a true indicator or the DPF and not the soot level grams which is accurate but it's a black magic calculation based on all sorts live throttle input etc.

You can definitely ignore the P040D-00

Did you clean your MAP and MAF sensors? I assume so given how much you took it apart.

Check the hoses in and out of the intercooler too.

PM me if you want my number

. Cheers, Greg
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2011 Vogue SE 4.4 with lots of toys in Stornaway

High pressure smoke test as a priority to rule out an intake leak - 4 hoses, intake manifolds etc. Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
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I use www.glenrands.co.uk Great independent specialist!
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I'm also seeing a possible alternator issue there mate

. Cheers, Greg
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2011 Vogue SE 4.4 with lots of toys in Stornaway

Thanks for reply guys. Yes, all the sensors cleaned yesterday so no problem there.
Do you know any garages that can carry high pressure smoke test in Luton area?

PS. Greg, I do not know why but voltage stuck on 11.7V yesterday all evening. I have noticed that when I got back home. IDD tool reconnected and instantly went to 14,5-14,7V. I have checked just now again and it is correct, over 14 Volts. Probably a glitch or something. I will monitor this just in case.

The throttle body to intercooler hose is generally a poor fit, I have recently put a brand new one and although it did seat better, you can still move it more than I would have expected. The big problem there is that you cannot buy just the seal 2011 TDV8 Vogue SE

Mine was leaking exactly there.

I did get a restricted performance when it happened.

Fettled the clip and refitted, been fine since.

PS Good to hear your volts are ok

. Cheers, Greg
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2011 Vogue SE 4.4 with lots of toys in Stornaway

AdamCzix wrote:

Click image to enlarge

What about this part of the intake system? All the flexi pipes have tight clips for secure fit but this plastic part sits on EGR inlet really loose only secured with thin secure wire groove clip. I can even rattle this like it was missing an internal seal or something. It also spin aroun EGR inlet pretty freely... Do you think a lot of pressure might escape there?

Firstly, all the advice above is good. It is particularly excellent that you recognised your indy was talking nonsense when he said:
"...they confirmed that there is an issue with DPF itself and it cloggs up really quickly. They need to cut it out, send it to do flush service and then they will be able to identify the problem. At this point they couldn't find anything else. They mentioned that DPF itself might be faulty".

I would challenge this. DPFs almost never break or go wrong. They are a static porcelain grid that gets hot. I don't think we've ever seen one break on here and I would not move to cut it off and get it flushed. A borescope in to have a look first possibly by someone who knows what they are looking for but cutting it off is last resort.
By far the most common causes are MAF/MAP sensors, which you've done, induction system leaks, driving in traffic.

After reading your initial description my call is a leak in the induction system. High pressure smoke test will find it as previously mentioned.

here's a more comprehensive checklist anyway:

Induction System pressure test
MAF sensors cleaned
EGR issue - the sensors are often and they shear off when you try to replace them so you end up buying a new manifold.
Turbos checked with borescope
DPF checked with borescope
Injectors
ECU software up to date
Exhaust manifolds have no leaks
Turbo Drain Mod is usually cited but it's not really considered a cause. It's sort of a stock supposed solution to DPF issues but I don't agree that it is often the cause of DPF sooting or the Mod will fix it.
Check Oil Dilution
EGR Sensor.


2 things - are you driving faster than 37mph and have you got more than 1/4 tank of fuel? I note you got that regen completed.
Also on your regens you want to drive steadily at 40-50mph, don't drop a cog in Sport .

Keep feeding info we will help you identify the issue.

cheers


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