As snow, ice, or salt grime gathers on cars in winter, many of the sensors that are key to the operation of advanced safety systems can become blocked and shut down—right when you may need them most.

Your vehicle's O2 sensor plays a significant role in its performance and if it's faulty, it's not something you should ignore. Here's what you need to know.

Q:Hi James. I keep having an oxygen sensor fault code for a lean exhaust with my '97 Corvette. I've taken the vehicle to the dealer several times but the problem keeps recurring. I would like to try ...