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

https://www.automotiveaddicts.com/119095/why-european-cars-need-a-different-kind-of-mechanic-than-usual-workshops

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