Generic OBD-II scanners can only read basic codes, missing critical issues...

https://dlf-ne.org/how-do-i-know-if-a-workshop-really-specializes-in-continental-cars/

Generic OBD-II scanners can only read basic codes, missing critical issues unique to European cars in Malaysia. Manufacturer-specific diagnostics reveal hidden faults, while genuine parts help avoid costly failures from counterfeits