 | Home > Technical > 2015 2.2 TDCI Puma fault code |
 
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17492   
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There are several threads on here asking this question (Google is your friend!), most seem to point to MAF and MAP sensors.
https://www.defender2.net/forum/post816250.html https://www.defender2.net/forum/post1049881.html Plus several more. |
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9th Jan 2025 10:58am |
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| Ianh Member Since: 17 Sep 2018 Location: Essex Posts: 2079
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Have you changed anything on the engine recently ? Especially on the air intake side. ?
Are you getting the Amber MIL come up on the dash ? 1. Check MAF sensor, give it a clean with a dedicated MAF cleaner. Liqui Moly is good. 2. Check MAF wiring and connector 3. Check air filter and airbox, make sure lid is fitted correctly. 4. Check hoses from to airbox to turbo, turbo to intercooler, intercooler to metal intake pipe, metal intake pipe to inlet manifold. Check for splits , holes and tightness of clamps. Noting the turbo to IC hose can hole underneath and on side due to rubbing ( this was an early issue that should have been corrected with bracket to hold the hose). Check the small elbow between metal pipe and inlet manifold , it can split / hole underneath. 5. Check / clean MAP sensor and Air Charge sensor a. Plus check wiring to all. Locations in this post for 2.4 and 2.2. https://www.defender2.net/forum/topic69503.html?highlight=sensor If cause of issue is not identified / fixed by above then throttle body needs checking, potentially throttle pedal as well. |
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9th Jan 2025 11:28am |
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| Sulisuli Member Since: 30 Oct 2016 Location: South west Posts: 4799 
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Many thanks to you both for your assistance.
@Blackwolf I did read both of those articles and hopefully it could be as simple as the first link. @ianh many thanks for possible locations / problems to address so about 18 months ago changed the air intake to a 98mm hose with a kit from Ian Baughan and fitted new ITG air filter (cleaned 8 months ago having done 6000 miles) The amber MIL came on but went out after a short time of its own accord before I was able to get to my local Indy but they read the code when checking. MAF sensor replaced 2 years ago (so will check and clean) The intercooler and hoses were changed 4 years ago from Alive, hoses from BAS The boost pipe is showing signs of rubbing damaged but we have tested it and its OK but is being replaced with new hose today at the Indy with one from Alive. Once hose is replaced will road test and see what if any codes are still present then look at the throttle body. The joys of Defender ownership  2015 HT XS 90
2008 SVX 90 2000 XS TD5 90 |
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9th Jan 2025 11:40am |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20512
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It could possibly be the throttle / accelerator pedal, I believe some 2.2’s had some issues with the sensors on them. (potentiometers).
Alternatively, though probably fine, be sure to check ground path, battery clamps are tight, alternator is producing correct voltage when running, battery is showing sensible voltage at rest etc. A ground fault can cause all sorts of wacky things, it might even cause a phantom DTC log. Especially with a generic ground, that can put all sorts of readings out for various sensors. Very cold weather is a possible cause, wet and damp as well. Personally, I’d check the battery, ground, clamps etc, record the code manually and clear it. If it comes back, there is another pre-existing issue, then you can investigate though. Cleaning the sensors is worth doing as Ian suggested. I use aerosol brake cleaner, just blow through, not touching sensor in the direction of flow with the MAF, the MAP sensor fixing is 3NM torque. No Guts, No Glory. 🇬🇧🏴🏴🏴🇮🇪🇺🇸⛽️🛢️⚙️🧰💪 |
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9th Jan 2025 4:48pm |
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| Ianh Member Since: 17 Sep 2018 Location: Essex Posts: 2079
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I think the ITG filter is an oiled filter. Is that correct for yours ? If so there have been reports that the oil from the filter can contaminate the MAF sensor and cause DTC’s.
If your amber MIL cleared on its own it shows that the fault that originally triggered the MIL has not re shown itself through several testing cycles. Therefore my initial thoughts are the MAF sensor was slightly contaminated by air filter oil, this caused the DTC and MIL. The slight contamination was then cleared with lots of air passing over MAF wires and therefore subsequent ECU testing cycles have not seen any more issues. The DTC you now see is historic so hopefully after clearing it , it won’t reappear. Noting I would still give the MAF a clean, and do so every 3-6 months if using an ITG oiled filter. |
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9th Jan 2025 5:34pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20512
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That’s one of the reasons I had considered an ITG Air Filter before, but decided against due to the oil to MAF sensor migration contamination on its sensor, and indeed even downstream from there.
I just stick to Genuine air filters, but change annually not bi annual. I have tried an aftermarket filter once (not oiled) but, found it wasn’t as good, a little restrictive. Decontaminating so to speak oiled filters is easier said than done, and needs doing quite regular and to be honest, I’m sure that the filter oil will migrate over to the MAF. And it shouldn’t be there, as it should be as clean as possible. It’s a shame as oiled filters do allow more air flow, but, that’s at the cost of more particulate matter going through it. How do you clean the oiled filters exactly? I know they need re-oiling before refitting but what is the cleaning process? Presumably solvent based blow through like brake cleaner or something solvent based, then re-oiled after? No Guts, No Glory. 🇬🇧🏴🏴🏴🇮🇪🇺🇸⛽️🛢️⚙️🧰💪 |
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9th Jan 2025 6:31pm |
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| barbel jim Member Since: 12 Dec 2012 Location: Northants Posts: 1431 
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The ITG filter or oil laced air filters , kills the MAF on a td5 if that helps. Couple of folk went back to paper filters. On a td5 the MAF can now be written out
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9th Jan 2025 8:51pm |
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| Sulisuli Member Since: 30 Oct 2016 Location: South west Posts: 4799
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Thanks to all of you for your invaluable knowledge and assistance it’s very much appreciated. Will work thru the suggested ideas and let you know. 2015 HT XS 90
2008 SVX 90 2000 XS TD5 90 |
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9th Jan 2025 10:11pm |
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| Sulisuli Member Since: 30 Oct 2016 Location: South west Posts: 4799
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Have worked my way thru every item you suggested Ianh
Including replacement of all 3 hoses as the boost one had rubbed on the steering and was showing signs of failure (although we did take it off and test it 20lb pressure without signs of leaking) we felt it best to replace with new silicone hoses. Removal and wash out of the DPF, the company who did it said it was very sooty and needed cleaning twice, replacement of the Lambada sensor. My Defender has done 125000 miles in my ownership of 6 years and every fill I add Miller son fuel additive, so I wonder what the DPF might have been like if I didnt us it... All appears to now be OK after 200 miles driving this weekend the engine feels more responsive and running much better and no warning lights or codes. Thankyou all who offered up suggestions and ideas to help me resolve this. 2015 HT XS 90 2008 SVX 90 2000 XS TD5 90 |
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13th Jan 2025 10:41am |
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