Generic OBD-II scanners only scratch the surface with European cars—they miss...

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

Generic OBD-II scanners only scratch the surface with European cars—they miss many manufacturer-specific codes that reveal real issues. Pair that with the risk of counterfeit parts flooding the market, and you’ve got a recipe for costly mistakes