 | Home > Puma (Tdci) > MAF overvoltage fault |
 
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3674   
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Should add, had the code reset last night and did about 30 miles with no issues. This morning it came on after roughly 5 mins of driving, exactly same as yesterday. However, this time it stayed in limp mode after turning off/on again.
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7th Jul 2022 6:03am |
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| BrickBox Member Since: 05 Oct 2021 Location: Wales Posts: 818  
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What condition are the wires connecting to the MAF in? 2008 2.4 110 Utility Station Wagon XS.
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7th Jul 2022 6:12am |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3674
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They look good. No obvious breaks or damage. If they were damaged it expect under voltage wouldn’t I?
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7th Jul 2022 6:32am |
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| BrickBox Member Since: 05 Oct 2021 Location: Wales Posts: 818
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They could short and spike voltage I guess, if they were broken/touching. 2008 2.4 110 Utility Station Wagon XS.
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7th Jul 2022 7:49am |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3674
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I’ve looked in the workshop manual for that fault code and it says either check the wiring or replace the sensor. Any idea which of the connector pins are the power connector?
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7th Jul 2022 7:56am |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3674
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Just by way of update, I changed the MAF sensor today. Mil light is still on, but it drove fine. Did about 17 miles of varying speed and didn’t hit limp mode, felt normal. Does it take a while for faults to self reset?
The test will be tomorrow morning. The last two days the light has been off in the morning then come on and gone into limp mode at exactly the same place/distance from home. |
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7th Jul 2022 3:49pm |
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| Def90 Member Since: 17 Jan 2015 Location: Kent Posts: 258 
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Hi
Also check the intercooler and it’s hoses for leaks or splits as That’s one of the faults you can get if your getting a fault code P0101-17 |
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7th Jul 2022 5:06pm |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3674
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Thanks. Checked those and all good. They would give an under vintage fault do to the reduced flow/presume, it an over vintage fault. At least that’s what the Indy said!
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7th Jul 2022 5:19pm |
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| Def90 Member Since: 17 Jan 2015 Location: Kent Posts: 258
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I had this fault code
P0101-17 (AE) Mass or volume air flow circuit range/performance - General electrical failure - circuit voltage above threshold. Turned out I had split the intercooler in three places! |
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7th Jul 2022 6:04pm |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3674
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Well that’s good news!!!
Just started her back up and the fault light has gone out, so fingers crossed that it’s just the sensor and not the intercooler!! |
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7th Jul 2022 6:28pm |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3674
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Drove to work this morning, no fault light! Hopefully that’s it sorted.
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8th Jul 2022 7:42am |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3674
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Well, after a week the light came back on. Was convinced I could hear air escaping and assumed an intercooler hose even though they are all silicon. Turns out you were right: intercooler split.  !Last edited by Co1 on 14th Jul 2022 4:08pm. Edited 1 time in total |
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14th Jul 2022 4:39am |
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| Ianh Member Since: 17 Sep 2018 Location: Essex Posts: 1999
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Looking at the IC while standing in front of your defender I bet the split was at the crimp seam on at the bottom left hand side of the IC
Although expensive, when my intercooler split, as they all seem to do, I went for the BAS one, not that I needed it for performance reasons, but because it’s so well made it will last the vehicle lifetime. As per the topic where we discussed fitting the dreaded silicon elbow pipe [url] https://www.defender2.net/forum/topic81674...oler[/url] the intercooler fitting was relatively easy in comparison. With aircon it’s a bit of a tight fit to remove old and fit new and may require the main coolant radiator to be lifted off its mountings and shifted forward a little to provide some wiggle room. I don’t know if it’s a placebo effect, or that the engine was impacted by a tiny IC split before it grew and threw a fault code (DTC). But since fitting the BAS IC and all 3 BAS silicon hoses the engine seems to rev, run and pull far better. I’m now contemplating a sealed intake, Nuggetstuff air box and a BAS 170 remap to make full use of the new IC and hoses !!!!!! |
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14th Jul 2022 12:52pm |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3674
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Cheers Ian. That silicon elbow job still gives me nightmares!
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14th Jul 2022 4:09pm |
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