XC90 Coding Error

Incorrect coding can definitely trigger those symptoms in a modern Volvo. The control modules need to be correctly configured to communicate. A coding mismatch will throw errors. Can you provide the exact code number? That would help narrow down which module is having the issue.

I didn't record the exact code, but it referred to a general configuration error. Is there a specific scan tool or diagnostic procedure you'd recommend to pinpoint the problematic module more accurately? I'm trying to avoid unnecessary component replacement.

Without the specific code, remote diagnostics are limited. A Volvo-specific scan tool (like VIDA) would give you the most detailed information, but these are often only available to authorized repair facilities. Given the symptoms, it sounds like a coding issue. I'd strongly suggest taking it to a workshop equipped with the correct tools to properly diagnose and recode the affected module. They'll have access to the latest software versions and calibration data.

I followed your recommendation and took my XC90 to a Volvo specialist. As you suspected, the issue stemmed from incorrect coding within one of the control modules. The repair, including recalibration and software updates, amounted to 360€. Thankfully, all error messages have vanished, and my XC90 is performing flawlessly. I appreciate your expertise!