Generic OBD-II scanners can miss key manufacturer-specific codes on European...

https://dlf-ne.org/e90-bmw-common-wiring-harness-issue-what-symptoms-show-up/

Generic OBD-II scanners can miss key manufacturer-specific codes on European cars, leading to misdiagnoses and unnecessary repairs. Coupled with the risk of counterfeit parts flooding the market, it’s clear these cars need a specialist’s touch