Modern cars are basically rolling computer networks. When you only use a basic...

https://www.wall-bookmarkings.win/modern-cars-are-essentially-networks-of-rolling-computers-you-can-t-fix-what

Modern cars are basically rolling computer networks. When you only use a basic code reader, you are just getting a surface-level hint instead of the full story. You need professional diagnostic software to talk directly to every ECU in the vehicle