XJ ( X351 ) 2009 - 2019

Tons of circuit codes

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Old Aug 19, 2025 | 03:22 PM
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cw14yesss's Avatar
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Default Tons of circuit codes

Hi, I have a 2013 Jaguar XJL Portfolio, it drives pretty well. Runs smooth, no hiccups. But it has a bunch of circuit codes. I don’t know if all these sensors are bad or if there is something else causing it. Here are the codes: P2400, P240c, U0447, P0238, P007d, P0062, P0162, P2405, P0061, P0181. Thank you
 
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Old Aug 19, 2025 | 05:06 PM
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What is your battery open circuit voltage?
 
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Old Aug 20, 2025 | 11:01 AM
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Agree with the above. Do you know how old the battery is?
Post back the resting voltage after the car has sat all night.
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Old Aug 22, 2025 | 04:31 AM
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I'd start with the U0447 after checking the battery. Any fault code with a "U" indicates communication faults on the network and suggests modules aren't able to communicate as they need to. These cars are very temperamental and my XJ portfolio was no different. I went through and cleaned as many of the interconnects as I could get to on the CAN which got rid of 95% of the issues I was having. Could also be a problem with wiring or a module but start with the easier stuff first. This fault could throw up a number of the other fault codes you're seeing. It's detective work with codes. Got to sift through false triggers to find the one that's actually causing the problem. Then clear the fault codes and see what happens after a few days of driving and see what codes pop back up
 

Last edited by fossberry; Aug 22, 2025 at 04:34 AM.
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Old Aug 24, 2025 | 10:14 PM
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First thing to do whenever you have any electrical issues is to make sure your battery is fully charged. A low battery will always cause lots of random DTCs.
 
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Old Nov 7, 2025 | 10:00 PM
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Originally Posted by Stuart S
First thing to do whenever you have any electrical issues is to make sure your battery is fully charged. A low battery will always cause lots of random DTCs.
yep.

Just got thru reading about FALSE CODES.

All related to battery voltage lapses..

Especially if you have ZERO symptoms
 
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Old Nov 8, 2025 | 10:36 AM
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Well another 1 poster! Hit and run so they never post back again.
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Old Nov 9, 2025 | 08:36 AM
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@cw14yesss Are we ?

"Tagging" a Forum member (entering their screen name) causes an email to be sent to them notifying them that they've been tagged. It's a wakeup call. Will we hear back from the OP?

Stay tuned ...
 
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