If you’re still relying on a cheap OBD reader, you’re missing the full story....

https://www.focus2move.com/why-diagnostic-software-has-become-essential-for-modern-vehicle-repairs/

If you’re still relying on a cheap OBD reader, you’re missing the full story. Modern cars are rolling networks where dozens of ECUs constantly talk to each other. When a warning light pops up, a simple code is rarely enough to find the real culprit