Diagnosing automotive problems used to be much more challenging. A mechanic had to use all of their skills to pinpoint mechanical or electrical issues. Nowadays, you can diagnose many problems ...

What do you do when the 'Check Engine' light comes on in your car? A lot of people just ignore it; after all, that sensor is notorious for lighting up for no reason. On the other hand, it could ...

This article was updated in August 2025 with new products and information. That little yellow check-engine light is sneaky. Most of the time, you forget it could be there. But when it detects an issue ...

Whether you're an everyday driver or a pro technician, when your check engine light suddenly comes on the first step is to connect an OBD-II scanner. At Autoweek, we recommend everyone carry an OBD-II ...

There's nothing more intimidating for many drivers than to find a warning error light appear on your vehicle dashboard. While some may be confident in their ability ...

Weekend wrenchers rejoice: there’s finally a CarPlay-compatible OBD scanner app available for iPhone users. It’s called OnTrack. For years we’ve been restricted to using a phone mount to diagnose cars ...

You’ve probably been there — you go in for a simple oil change, and suddenly the mechanic tells you your transmission needs replacing. Or your check engine light turns on, and what you thought would ...

An OBD2 scanner that can read your vehicle’s trouble codes is a critical tool for DIYers. But even if you don’t like turning wrenches yourself, it’s hugely helpful to be able to get an idea of what’s ...