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

https://romeo-wiki.win/index.php/What_Is_a_Continental_Workshop_and_What_Do_They_Specialize_In%3F

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