What are the symptoms of a faulty Honda knock sensor?

[LeLouis]

Here are the related symptoms of a faulty knock sensor: 1. Engine ignition timing advance angle: During engine operation, excessive ignition timing advance (ignition advance angle), engine load, temperature, and fuel quality can cause engine knocking. When knocking occurs, as the gas combusts before the piston reaches top dead center, mild cases produce noise and reduce engine power, while severe cases can damage the engine's mechanical components. 2. Damaged knock sensor: If the knock sensor is damaged, the engine control unit (ECU) cannot monitor the degree of knocking. When the ECU detects engine knocking through the knock sensor, it reduces the ignition advance angle. However, with a faulty sensor, the ECU may mistakenly determine no knocking is occurring. In this case, the ECU will increase the ignition advance angle, causing the engine to operate roughly and vibrate due to knocking.