Ever wonder what your mechanic really sees when they plug in that scan tool?
On this episode of the Bumper to Bumper Podcast, Dave Riccio and John Riggle break down one of the most misunderstood topics in auto repair: scan tools, diagnostic codes, and what actually goes into figuring out what’s wrong with your car.

They explain why a scanner doesn’t magically “tell you the problem,” why live data matters far more than just reading codes, and how real technicians diagnose issues even when there are no codes at all. From misfires to torque converter confusion to the hidden modules modern vehicles rely on, this episode pulls back the curtain on the tech behind today’s cars.

Whether you’re trying to understand your car better or avoid being misled at the shop, this episode puts you in the know.