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

https://www.mediafire.com/file/77eba7osq6tv0c5/pdf-93939-6247.pdf/file

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