Onboard diagnostics (OBD) systems have been around since the 1980s and were developed to help limit harmful automotive exhaust emissions. Between 1988 and 1995, U.S.-built vehicles came with what's ...

It may cost you more in the long run. You’re driving along and suddenly your check engine light goes on. But nothing seems to have changed with the way your car is running. It’s OK to let it go for a ...

Ignoring a check engine light might feel harmless if the car still runs smoothly, but the warning signals more than a minor inconvenience. Driving with that light on can lead to higher repair costs, ...