What role does the throttle position sensor (TPS) play in engine performance?

The throttle position sensor (TPS) is crucial for optimizing engine performance, as it monitors the position of the throttle valve. This information is essential because it directly impacts the amount of air entering the engine. By providing real-time data to the engine control unit (ECU), the TPS allows the ECU to make precise adjustments to the air-fuel mixture. This ensures that the engine runs efficiently across various operating conditions, such as acceleration, deceleration, and idle. Therefore, the TPS plays a fundamental role in maintaining optimal engine performance and emissions control, ultimately enhancing vehicle drivability and efficiency.