If the bearing sensor is broken, then the first performance is that the ignition is invalid and the engine is difficult to start. When the car is hot, it is difficult to refuel. Either listen directly or stop the fire directly. There will be fuel consumption, the car is weak, and the acceleration can't add up. Even when driving, the car will keep shaking and so on.

Extended data:

Camshaft position sensor, whose function is to collect the movement angle signal of the camshaft and input it into the electronic control unit (ECU) to determine the ignition time and fuel injection time. Camshaft position sensor, in order to distinguish it from crankshaft position sensor (CPS), camshaft position sensor is generally represented by CIS.

The function of camshaft position sensor is to collect the position signal of valve camshaft and input it to ECU, so that ECU can identify the compression top dead center of 1 cylinder, and then carry out sequential fuel injection control, ignition timing control and deflagration control.

In addition, the camshaft position signal is also used to identify the first ignition time when the engine is started. Because the camshaft position sensor can identify which cylinder piston is about to reach the top dead center, it is called cylinder identification sensor.

References:

Baidu Encyclopedia-Camshaft Position Sensor