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Grenadier



Member Since: 23 Jul 2014
Location: The foot of Mont Blanc...
Posts: 5829

France 2011 Defender 110 Puma 2.4 DCPU Corris Grey
Permanent Fault U0100
Def not starting after clutch change. Done diagnostic and a permanent fault code has come up, U0100. Any thoughts? With mechanic as we speak. Help welcome. Thumbs Up Monsieur Le Grenadier

I've not been everywhere, but it's on my list.....

2011 Puma 110DC - Corris Grey
Post #513467 12th Mar 2016 9:40am
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Scoobeenut



Member Since: 04 Mar 2015
Location: West London
Posts: 310

United Kingdom 2010 Defender 90 Puma 2.4 SW Santorini Black
From google
The U0100 code is generic inasmuch as it has the same frame of reference on all vehicles. Somewhere within the CAN bus network (Controller Area Network) an electrical connector, wiring harness, module has failed, or the computer has crashed. The CAN bus allows microcontrollers and modules, as well as other devices communicate independently of a host computer. The CAN bus was designed for the automobile specifically. Symptoms Symptoms of a U0100 DTC code may include. Vehicle stalls and will not crank or restart OBD trouble code U0100 will be set and the check engine light illuminated Vehicle may start after sitting idle for a period of time, however, it would be risky to operate because it could fail again at a most inopportune moment

Read more at: http://www.obd-codes.com/u0100
Copyright OBD-Codes.com
Post #513472 12th Mar 2016 10:18am
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Grenadier



Member Since: 23 Jul 2014
Location: The foot of Mont Blanc...
Posts: 5829

France 2011 Defender 110 Puma 2.4 DCPU Corris Grey
Cheers, we've come to the conclusion that it is the immobiliser. Mech has a Disco 2 in workshops and we've checked the sequence. Mine isn't going through the light sequence properly. Going to take keys to dealer on Monday to recalibrate and see what happens then. But if anyone has an idea how to reset the immobiliser itself, be much appreciated. Monsieur Le Grenadier

I've not been everywhere, but it's on my list.....

2011 Puma 110DC - Corris Grey
Post #513481 12th Mar 2016 10:41am
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Grenadier



Member Since: 23 Jul 2014
Location: The foot of Mont Blanc...
Posts: 5829

France 2011 Defender 110 Puma 2.4 DCPU Corris Grey
Video of the fault...

 Monsieur Le Grenadier

I've not been everywhere, but it's on my list.....

2011 Puma 110DC - Corris Grey
Post #513577 12th Mar 2016 3:35pm
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Marcassin



Member Since: 18 May 2022
Location: Aveyron
Posts: 5

France 2008 Defender 110 Puma 2.4 SW Keswick Green
Hi,
sorry for pushing up that old topic. I have the exact same problem on my 110 TD4.
Like you, the alarm light does not turn on (suggesting that would be a problem with the immobilizer system) and I also have the "U0100(87)" error code returned by the OBD2.

@Grenadier, how did you fixed it ?
Post #960324 2nd Aug 2022 3:24pm
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Ianh



Member Since: 17 Sep 2018
Location: Essex
Posts: 2022

United Kingdom 
I’m not sure what the resolution to the OP’s issue was, however If yours is a 2.4 have a read of this, in particular the bottom of page 7 , the post from Martin, it could be your IPAC and you can see if it is by removing the connector, connecting pins 3 and 4 together and seeing if the engine will then start without the IPAC connected https://www.defender2.net/forum/topic47486...p;start=90.

Else could be an earth issue or ignition switch issue.
Post #960353 2nd Aug 2022 6:01pm
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Marcassin



Member Since: 18 May 2022
Location: Aveyron
Posts: 5

France 2008 Defender 110 Puma 2.4 SW Keswick Green
Many Thanks Ianh,
I will switch the this thread/topic and hopefully find a solution there.
The problem looks slightly different since mine does not crank (like Grenadier's one). Anyway, the IPAC wiring/connector options sounds easy enough to give it a try in any case.
Post #960395 3rd Aug 2022 8:03am
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