Got a check engine light? Trying to run a diagnostics check but you're still wondering what those OBD 1 codes mean? Check out what engine codes your ECU may throw out and what they mean. Get all ...

OBD-II is the standard diagnostics port in cars, and it's been that way for years. When did it replace OBD-I in motorcycles? Which one does your bike have?

When your check engine light comes on, it can be tough to figure out why. Since the mid-'90s, though, most cars are made with OBD ports that make things easier.

An OBD II system can be so sensitive to changes in engine performance that the addition of some aftermarket equipment causes the system to operate outside of those very tight operating limits.

Did your vehicle's check-engine light just pop on? An OBD-II scanner can provide some direction. We tested a handful to find ...

We recently got our hands on the new GoTech mobile OBD-II diagnostic tool and put it through its paces on several trucks in our fleet. The GoTech is more than just a code reader, though.

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 ...