haraldschmidt1

Volvo S80 sporadic errors

I'm at my wit's end! My 2003 Volvo S80 diesel is throwing sporadic errors. Driving mode glitches, service lights flicker, and the audio system cuts out. Diagnostic scan shows errors, but everything seems fine after a restart. Has anyone seen this before?

A 2003 Volvo S80 diesel was experiencing sporadic errors, including driving mode glitches, flickering service lights, and audio system cutouts. These issues were suspected to be caused by a faulty cable connection to the BUS system. A visit to a workshop confirmed a defective cable connection to the control unit, which was repaired, resolving the problem.

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4 comment(s)

That sounds frustrating. Does it seem to happen more often in certain conditions, like when it's hot or cold, or after driving for a while? Also, what kind of errors are stored in the memory? Knowing the codes would help narrow things down.

Good point. I haven't noticed a specific pattern regarding temperature. As for the error codes, could a faulty cable connection to the BUS system cause these symptoms?

Yes, a bad BUS connection could definitely explain the random system failures and stored errors. Since it’s sporadic, I’d say a workshop visit is in order to check all the relevant cable connections. It's probably something simple, but chasing it yourself could take ages.

Thanks for the insight! I took it to a trusted shop, and they found a defective cable connection to the control unit, just as you suspected. Repair cost was 155€. Problem solved!

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VOLVO

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S80