Posted on 4/28/2025
Today’s vehicles rely heavily on sensors to monitor everything from fuel and air mixtures to tire pressure and emissions. These sensors feed real-time data to your car’s computer systems, helping the engine run smoothly and alerting you when something goes wrong. But what happens when one sensor goes bad? In many cases, it doesn’t just cause one light to come on—it can trigger several. Here’s how a faulty sensor can lead to multiple warning lights and what it means for your vehicle. The Role of Vehicle Sensors Modern vehicles contain dozens of sensors, each responsible for tracking a specific function. For example, oxygen sensors monitor emissions, mass airflow sensors track incoming air, wheel speed sensors assist with ABS, and the throttle position sensor helps manage acceleration. All of this information is processed by your vehicle’s computer (often called the ECM or PCM) to ensure proper performance. When one of these sensor ... read more