Generic OBD-II scanners only scratch the surface when it comes to European...

https://www.last-bookmarks.win/if-you-own-a-european-car-in-malaysia-relying-on-generic-obd-ii-scanners-often

Generic OBD-II scanners only scratch the surface when it comes to European cars. These vehicles use manufacturer-specific codes that require specialist diagnostics to pinpoint issues accurately