Modern cars generate mountains of diagnostic data, and choosing the right OBD-II scanner can make the difference between ...

Seeing your vehicle's check-engine light come on can throw a wrench in your travel plans. It can also feel a little scary: Does it mean your ride is headed for the scrapyard? Or is there a simple fix?

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 ...

In 1976, Chrysler ushered in the computer engine management system era with their Electronic Lean Burn 400 4-bbl. This early computerized spark-advance control system was developed to make the engine ...

The second iteration of on-board diagnostics, OBD II, has been required tech on all new cars sold in the U.S. since 1996. That means that anyone who uses or works on cars less than three decades old ...

Once upon a time, you could diagnose the culprit of your Mazda MX-5 Miata's check engine light with a paperclip. We now use ...

In the Last diagnostics article, we outlined how to retrieve and decipher engine diagnostics for engines running OBD-I engine management computers. OBD or On Board Diagnostics is a subsystem of the ...