The Check Engine light may indicate a serious issue with your Cummins diesel engine. Here's how to check and clear the fault codes triggering that light.

️ Editor's note: This product category requires new testing about once a year. We'll update this article with the most recent information when it's available. Modern cars are technological marvels, ...

Cars are more than just oil and steel. Modern models have incorporated electronics and computer chips to help manage and optimize their mechanical components. That means maintaining your car's ...

An OBD-II scan tool is an incredibly useful automotive diagnostic device, but it's not magic. Here's what it can and can't do.

Not sure how to interpret a fault code on your car? Our complete guide explains everything. A standard DTC list was created by the Society of Automotive Engineers (SAE). Cars and light trucks ...

My 2014 Polo has a warning message about the daytime running light. The bulb was faulty and I had it replaced, and it is now working. However the warning messgae is still there. How can I turn it off?

My 2014 Polo has a warning message about the daytime running light. The bulb was faulty and I had it replaced, and it is now working. However the warning messgae is still there. How can I turn it off?

I’ve picked seven of the best Bluetooth-connected scanners that plug into a car’s OBD2 socket and put them against each other in a mega test of diagnostics. Here are the best Bluetooth OBD2 scanners.