Generic OBD-II scanners can only read basic fault codes, but European cars...

https://www.toro-bookmarks.win/thinking-a-generic-obd-ii-scanner-is-enough-for-your-european-car-think-again

Generic OBD-II scanners can only read basic fault codes, but European cars often use manufacturer-specific systems that need specialist diagnostics to pinpoint issues. Using counterfeit parts risks more damage and costly repairs