Stop guessing and start fixing. Modern cars rely on a complex network of ECUs...

https://www.save-bookmarks.win/if-you-re-still-relying-on-a-cheap-obd-reader-you-re-missing-the-full-story

Stop guessing and start fixing. Modern cars rely on a complex network of ECUs that control everything from your fuel injection to your door locks. Basic OBD readers only scratch the surface by pulling generic codes