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
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.
Just got thru reading about FALSE CODES.
All related to battery voltage lapses..
Especially if you have ZERO symptoms
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