What is the reason for BYD F3' s high idle speed?

The reason for BYD F3' s high idle speed is that the idle speed will increase when the cold car is started or it may increase when the air conditioner is turned on. The reasons for abnormal idle speed are as follows: 1. Throttle fault: Unclean throttle will lead to the error of throttle opening and the decrease of throttle sensitivity. When idling, it may be closed improperly, resulting in abnormal idling. In addition, the throttle failure will also affect the engine's power, acceleration performance and fuel consumption, and even lead to difficulties in starting in serious cases. 2. Idle speed control valve failure: Idle speed cannot be adjusted correctly due to idle speed valve failure, which leads to serious problems such as unstable idle speed, difficult cold start, and even flameout when the throttle is released without idle speed. 3. Sensor failure: A sensor failure will make the computer misjudge or the computer itself fail, and the engine will be abnormal when idling.