What is the phenomenon that the throttle position sensor is broken?

The damage of throttle position sensor is as follows: 1, poor contact of idle contact; 2. There is no idle signal. The engine is not idling or idling is unstable. There is no poor contact of load contact and no full load signal input. The reason for the failure of the throttle position sensor is as follows: 1. Poor contact: due to corrosion of the joint, poor contact voltage or non-conduction, the engine is easy to stall or difficult to start. 2. Initial position misalignment: resulting in high or low output voltage and unstable idle speed. 3. Coating failure: the change of resistance leads to inaccurate output voltage and poor vehicle starting acceleration. 4. Too much carbon deposit on the throttle valve: it leads to lax closing, which affects the output voltage value and flow value, leading to inaccurate air-fuel ratio and unstable idle speed.