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The BOSCH Detonation Sensor (0 261 231 197) plays a crucial role in modern engine management systems. It monitors the engine for abnormal combustion events, commonly known as knock or detonation. By accurately detecting these vibrations, the sensor provides vital data to the engine control unit (ECU). The ECU can then adjust ignition timing and fuel mixture in real-time to prevent engine damage and optimize performance. This ensures smoother operation and helps maintain fuel efficiency. Engine knock can lead to significant internal damage if left unaddressed. The detonation sensor acts as an early warning system, allowing the ECU to take corrective actions before serious issues arise. This component is essential for maintaining the health and longevity of your vehicle's engine.