The image shows a knock sensor, an essential component in modern internal combustion engines. It detects engine knocking or detonation, which is a met

Function: It acts as an "electronic ear" on the engine, detecting unusual vibrations caused by irregular combustion. Mechanism: It contains piezoelectric crystals that generate voltage when compressed by engine vibrations. Signal to ECU: The sensor sends signals to the engine control unit (ECU), which then adjusts the ignition timing to prevent engine damage. Benefits: It helps protect the engine, optimize performance, reduce emissions, increase engine lifespan, and improve fuel economy. Symptoms of a Faulty Sensor: Reduced engine power, decreased fuel efficiency, check engine light illumination, and difficulty starting the engine. Location: Typically found on the engine block's exterior.