Modern cars are essentially networks of computers on wheels. If you’re still...

https://wiki-tonic.win/index.php/Demystifying_Manufacturer_Diagnostic_Protocols:_Why_Your_Shop_Needs_More_Than_an_OBD_Reader

Modern cars are essentially networks of computers on wheels. If you’re still relying on a basic code reader, you’re only seeing a fraction of the story. You need professional diagnostic software to talk to every ECU and view live data streams in real time