Category

Diagnostics

Fault codes, scan tools and a repeatable process for finding what is actually wrong.

Why Several Warning Lights Come On at the Same Time

Several warning lights at once usually means one shared cause - power, ground, network or a sensor feeding multiple systems....

4 min read

What an OBD-II Scanner Actually Tells You (And What It Does Not)

OBD-II tells you far more than a trouble code - and far less than most people assume. What freeze frame,...

4 min read

How to Diagnose Car Electrical Problems Before You Replace Anything

A working method for narrowing down a vehicle electrical fault - reading codes correctly, voltage drop testing under load, provoking...

5 min read