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XC90 BUS System Errors

XC90 diesel, 2021, 125k km. Sporadic errors in driving mode and random error lamps. Audio/nav failing intermittently, sometimes control units unresponsive. OBD-II scan shows errors. Suspect BUS system issue. Anyone seen this?

A 2021 XC90 diesel with 125,000 km is experiencing sporadic errors in driving mode, random error lamps, and intermittent failures in audio and navigation systems, suspected to be related to the BUS system. A similar issue was resolved by checking and fixing cable connections to the control units. Upon inspection, a loose BUS cable connection was found and re-seated, stabilizing the system.

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4 comment(s)

I had similar issues with my XC90. Random system failures, audio cutting out, that sort of thing. Have you checked the cable connections to the control units? That was the culprit in my case.

Which control unit cable specifically? And what was the error code you pulled?

I didn't pull the error myself, unfortunately. The workshop identified a defective cable connection to the BUS system. I'd recommend getting it checked professionally, as diagnosing BUS issues can be tricky.

Thanks for the insight. Checked the BUS cables and found a loose connection. Cleaned and re-seated it. Seems stable now. Repair cost: 155€ Appreciate the help.

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VOLVO

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XC90