Your car speaks a language—OBD2 tools help you understand it. From reading codes to monitoring live data, these scanners let you catch problems early. Whether you’re a DIYer or a pro, knowing how to ...

Once limited to reading check engine codes, OBD2 scanners now range from $24 glovebox tools to AI-powered systems for professional diagnostics. Standardized since 1996, they help drivers and mechanics ...