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

https://meet-wiki.win/index.php/Why_Does_My_European_Car_Idle_Change_When_the_Air_Conditioning_Turns_On%3F

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