What are the symptoms of a faulty knock sensor?

[Willa]

Symptoms of a faulty knock sensor include: 1. Reduced engine power; 2. The engine produces knocking sounds; 3. Damage to engine pistons and cylinder block; 4. Inability to detect engine knock signals; 5. Failure to automatically retard ignition timing; 6. The engine warning light on the dashboard will illuminate. The knock sensor is installed in the middle of the engine block and is used to measure engine vibration. When engine knock occurs, it adjusts the ignition timing. The working principle of the knock sensor is: When vibration or knocking occurs, it generates a small voltage peak. The greater the knocking or vibration, the higher the voltage peak produced by the knock sensor. A certain high frequency indicates knock or engine knocking. Knock sensors are typically designed to measure frequencies in the range of 5 to 15 kHz. When the control unit receives these frequencies, the ECU adjusts the ignition timing to prevent further knocking.