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DTC fauts 😱

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diag dtc electrical
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836 views 2 replies 2 participants last post by  bilin95  
#1 ·
Hello everyone 🤗,
I'm coming to you to ask for help in understanding and resolving DTC error codes... I can't explain them. They always come back after being erased...

The only thing I can point out, but which are obviously not the cause of the errors according to the manufacturer, is that I installed a Ksmart box 2 years ago to have Android auto and the touch screen... I also have a dashcam, and a weak main battery that I will change soon...

but the long list of DTCs worries me... I'm afraid I'll have to go and have it checked by Volvo electronics 💸💸💸....

Thank you very much for your advice
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#2 ·
Apart from the CEM and ECM errors, all these errors are to do with the infotainment system in one shape or form. I would take what the manufacturer told you with a grain of salt. My money is that your touchscreen is the issue here. A bunch of these are Su ply open circuit errors, likely from cables which have been disconnected but left dangling.
 
#3 ·
Thank you! I think so.. 🤔. I'll change my main battery tomorrow and add adblue . I will see if that will change somethings. About the CEM u030141, I have found a internal document which explains it could be ignored in my case. The raison is probably a test for motor upgrade tuning but impossible with latest v40 and IT'S new protected ECM
 

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