What are the symptoms of a faulty knock sensor in a car?

[JayceMarie]

When the knock sensor in a car is damaged, the symptoms include: 1. Engine knocking occurs during operation. A faulty knock sensor can cause excessive ignition timing advance during engine operation, leading to engine knocking due to factors such as engine load, temperature, and fuel quality. 2. Decreased engine power, increased fuel consumption, accompanied by engine knocking. A damaged knock sensor affects the engine's load, resulting in higher fuel consumption and knocking sounds. Here is some information about the knock sensor in a car: 1. The knock sensor is an AC signal generator. It is used to detect the speed and position of the crankshaft, as well as vibrations or mechanical pressure. 2. The knock sensor is installed in various locations on the engine block or cylinders. When vibrations or knocking occur, it generates a small voltage peak; the more severe the knocking or vibration, the higher the peak produced by the knock sensor. A certain high frequency indicates knocking or pinging, and knock sensors are typically designed to measure frequencies in the range of 5 to 15 kHz.