Modern vehicles are basically computers on wheels. When you rely only on a...

https://alexisqoem867.trexgame.net/obd2-scanner-vs-dealer-diagnostic-software-what-is-the-difference

Modern vehicles are basically computers on wheels. When you rely only on a basic OBD reader, you are basically playing a guessing game because those tools usually just show basic engine codes. Real diagnostic software lets you talk to every ECU in the car