Car onboard diagnostic systems are very useful, but different brands have diverse error codes. Here's the difference between ...

In the January issue, we discussed the history of OBD. This time we are going to investigate some of the technology required to meet OBD II standards. To give an idea of the magnitude of technological ...

Modern vehicles hide a wealth of information behind the OBD-II port, and understanding it can save you time, money, and frustration. From reading trouble codes to streaming live engine data, ...

The world of car diagnostics has changed a lot over the last 50 years. Back in the '70s and earlier, a mechanic's most valuable diagnostic tools were usually their eyes and ears. You could figure out ...