OBD readiness monitors quietly determine whether your car will pass an emissions inspection. Too many ‘not ready’ statuses can mean an automatic rejection, even without a check engine light. Preparing ...

In March 2022, within a broader-treatment post on automobile owners’ rights to repair their own vehicles, I briefly introduced the topic of the on-board diagnostics (OBD) port, used to monitor (and in ...

View post: Introducing the Men’s Journal Gear of the Year Issue With Keanu Reeves! OBD2 scanners reveal car issues, aiding diagnostics before emissions tests or repairs. California's 2025 rules ...

A detailed breakdown of OBD-II diagnostic trouble codes (DTCs) is offering clearer guidance for brake light and related vehicle repairs. By distinguishing between generic and manufacturer-specific ...

Starting early next year, 1996 and newer vehicles won’t have to pass the Illinois EPA’s treadmill emissions test that generates hundreds of damage claims annually. Instead of the dynamometer test, in ...