Generic OBD-II scanners might catch basic faults, but European cars often hide...

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

Generic OBD-II scanners might catch basic faults, but European cars often hide manufacturer-specific codes that only specialists can read. Add in the risk of counterfeit parts causing more harm than good, and it’s clear why expertise matters