Episode 257

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Published on:

7th Oct 2026

From Bad Grounds to Bricked Modules: Real-World Diagnostic Lessons [E257]

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Thanks to our Partners, Pico Technology and Autel

Are you chasing elusive automotive problems? Pico Technology empowers you to see what's really happening. Their PicoScope oscilloscopes transform your diagnostic capabilities. PicoAuto.com

From drivability diagnostics and TPMS service to ADAS and advanced safety systems, Autel helps technicians follow OEM procedures and repair with confidence. Autel.com

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The Weekly Blitz with Chris Cotton: https://chriscotton.captivate.fm/

Speak Up! Effective Communication with Craig O'Neill: https://craigoneill.captivate.fm/

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About the Podcast

Automotive Field Theory
From Automotive Diagnostics to Metallica and Mental Health
Automotive Field Theory explores the forces that shape automotive repair, including the ones measured with a meter or oscilloscope and the ones that cannot be found on a wiring diagram.

Hosted by automotive diagnostic specialist, shop manager, and instructor Matt Fanslow, the podcast begins in the automotive aftermarket but rarely stays inside its traditional boundaries. Diagnostics, electricity, technology, leadership, psychology, economics, game theory, history, music, movies, family, and human behavior may appear unrelated. Look closely enough, however, and connections begin to emerge.

A vehicle may arrive with a technical fault, but the work surrounding it is rarely technical alone.

Information is incomplete.

People make decisions under pressure and uncertainty. Incentives shape behavior. Standards gradually drift. Good intentions produce unexpected results. The official process may say one thing while the system quietly rewards another.

Automotive Field Theory is an attempt to understand those interactions.

Drawing from real diagnostic work, shop management, industry conversations, personal experience, and an occasionally inconvenient level of curiosity, Matt examines not only how things work, but why they work that way, how they became what they are, and what apparently unrelated subjects might teach us about repairing vehicles, leading people, running businesses, and improving the automotive industry.

Some episodes begin with a failed component. Others begin with Metallica, quantum physics, professional wrestling, a historical disaster, a round of golf, or a question that refuses to leave Matt alone.

Eventually, they all enter the same field.