If you build engines, tune cars, or even just like mashing your foot on the throttle with conviction, you’ve probably heard ...

As the name suggests, oxygen sensors in a car’s exhaust system sniff for oxygen, the presence of which indicates incomplete combustion and unchecked pollution. This can trigger the check engine light.

How many oxygen sensors does a typical car have, and what factors determine this number? Additionally, how do their placements affect engine performance and emissions control? Thomas Hello Thomas, the ...

Modern vehicles are pretty complicated pieces of tech. Apart from emissions and other vital functions, the engine control system relies heavily on several sensors to regulate performance. That is ...

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.