In many cases, it's safe to keep driving when a solid check engine light turns on, but it's a sign to get the car diagnosed as soon as possible.

We may receive a commission on purchases made from links. If you've ever connected a standard OBD-II scanner to your motorcycle only to find it doesn't work as expected, you're not alone. Unlike cars, ...

A small device can cause big headaches for diesel owners, but there’s a quick and effective fix Rislone Helps Nix NOx Sensor ...

OBD-II diagnostic device BlueDriver interprets engine error codes to suggest what might need fixing, and lets you know if your car is ready for a smog check. Wayne ...

Last Saturday afternoon, I squatted on the concrete ground of the used car market, the paint thickness gauge in my hand ...

The vehicle's onboard diagnostic systems (OBD-I and -II) are sometimes difficult to understand. Not only do state and federal smog laws need to be figured out, but the swap to a later-model engine can ...

If you own a Cummins truck built after 2018, you're quite limited when it comes to what you can do via the ODB port. That's ...

A journalist's experience with a check engine light and an outrageous $250 diagnostic fee reveals how a simple, affordable tool can save you from questionable auto shop practices and hundreds of ...