Every O2 sensor works by comparing exhaust gas to outside air—the difference in oxygen levels creates a voltage that's read by the car's computer.

Replacing a faulty oxygen sensor is the only viable solution to get your car running properly again. To this end, this article provides a step-by-step guide on how to replace a faulty oxygen sensor.

We drill holes in an exhaust header to demonstrate how even the tiniest exhaust leak can affect O2 sensor accuracy and yield unreliable tuning data.

Oxygen sensors are not among the maintenance items that need to be replaced regularly, so they typically are replaced only when they fail.

Sensor data and IoT applications have special requirements that might be better served by a specialized database. Here’s what to consider.