If your Check Engine light is constantly trying to get your attention, one possible problem could be a bad O2 sensor. If you do have a failed oxygen sensor, follow these steps to replace it.

Diagnostics An oxygen sensor that’s going bad or has failed altogether won’t always throw a check engine light or trip a diagnostic trouble code. Sometimes if there’s an internal problem ...

Will a code reader shut off a wheel sensor light? – Hugh Most do-it-yourself car enthusiasts own a code reader. Widely available, they have become a must-have for anyone who wants to get ...

Nissan is recalling 686,500 Altima and Sentra passenger cars to fix problems with a sensor that could lead to engine stalling.