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

https://www.red-bookmarks.win/basic-obd-readers-barely-scratch-the-surface-of-today-s-vehicles-modern-cars

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