 | Home > Technical > Puma P0101 fault code |
 
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| Shafski Member Since: 19 Jun 2023 Location: Chilterns Posts: 131   
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Silly question. Have you checked the air filter is fully “home” and the air box lid is locked in under the wing, (2 hinge like clips) and thus creates the perfect seal?
Don’t ask me how I know this  Shafski
_________________________________________ 2015 110 Montalcino Red Utility "Harriet" along with Puma on I.C.E |
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21st Oct 2025 1:02pm |
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| Drawbar Member Since: 21 Oct 2025 Location: stafforshire Posts: 4
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yes plus new filter fitted
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21st Oct 2025 1:19pm |
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| Shafski Member Since: 19 Jun 2023 Location: Chilterns Posts: 131
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Then the simple checks are done…
Check out this thread https://www.defender2.net/forum/topic92122.html They do seem to love a limp mode.. Keep us posted - good luck Shafski _________________________________________ 2015 110 Montalcino Red Utility "Harriet" along with Puma on I.C.E |
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21st Oct 2025 5:27pm |
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| Ianh Member Since: 17 Sep 2018 Location: Essex Posts: 2543
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Just to clarify,
1. have you replaced all 3 hoses, inc the elbow into the inlet manifold ? That one can hole on its underside. 2. Are you 100% sure the Intercooler is not leaking as they do fail at the crimped seam. If elbow replaced, you are 100% sure it’s not the Intercooler and all the clamps have been checked I have heard of the inlet manifold having a crack in it and causing a P0101 fault, but only once so a potential cause but very unlikely. I suppose the throttle body could have an issue and not be fully open, however I’ve not read any reports of that happening either. |
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21st Oct 2025 5:52pm |
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| JPE Member Since: 19 Nov 2018 Location: South West England Posts: 347 
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I don’t know if this will help, but I’ve had p0101 five times in six years:
1. Elbow hose split, which a smoke test failed to find. 2. Intercooler seam split. 3. Upper hose. 4. Changed maf as a precaution & needed to put the original back! 5. Clamp needed tightening. Hope you get to the bottom of it soon. |
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21st Oct 2025 6:11pm |
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| Ianh Member Since: 17 Sep 2018 Location: Essex Posts: 2543
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On the MAF, some sites state the same part for the 2.4 and 2.2 and invariably send the 2.4 MAF. This is incorrect, they are different and a 2.4 one won’t work properly in a 2.2. Just thought it worth pointing out.
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21st Oct 2025 6:47pm |
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| Drawbar Member Since: 21 Oct 2025 Location: stafforshire Posts: 4
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Thanks to everyone with there advice.
I tried everything and found the fault. The smoke test never helped but compressor at 30psi found the leak in the intercooler. |
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22nd Oct 2025 10:54am |
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| Ianh Member Since: 17 Sep 2018 Location: Essex Posts: 2543
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It’s a very common fault, it fails at the crimp seams.
Bell auto services make and sell the best high flow intercooler as a replacement. That will last a lifetime as all is welded. However I don’t think Pete has any left in stock and I’m wondering if he is going to get any more made. However he also recommends and stocks one from Airtec which is well made. https://bellautoservices.co.uk/store/land-...tercooler/ You can get from Airtec direct as well https://www.airtecmotorsport.com/products/land-rover/defender/ You can’t take full advantage of the new high flow IC unless you have a map, however I noticed a good improvement to engine performance when used with new silicon hoses and upgrading the air intake pipework from the highly restrictive LR setup to a much larger bore circular hose. |
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22nd Oct 2025 11:16am |
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| Shafski Member Since: 19 Jun 2023 Location: Chilterns Posts: 131
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I literally fitted the Artec on the advice of BAS a week ago! What a difference!!! It’s incredibly well made, and night and day on the stock item. Shafski
_________________________________________ 2015 110 Montalcino Red Utility "Harriet" along with Puma on I.C.E |
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22nd Oct 2025 6:43pm |
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