A knock sensor is an engine management component in modern internal combustion engines. It is designed to detect the sound of knocking or pinging in the engine, indicating an engine problem such as ...

Your engine may need premium fuel and be unable to compensate for regular gas (today's anti-knock sensor technology lets many engines run on any gasoline grade, but the sensor could be bad).

To prevent engine damage due to knock, the spark ignition timing of a gasoline engine is usually controlled by a knock sensor. Therefore, an engine's ignition timing cannot be set freely to achieve ...