Automobile fault alarm device and automobile

The utility model relates to an automobile fault alarm device and an automobile, comprising: a pressing assembly installed in a box body and used for pressing a plurality of detectors, one end of each detector is provided with a plug wire, the other end of the plug wire is connected with a sensor installed on the inner wall of the box body, the sensor is provided with a plurality of communication ports, and the communication ports are communicated with the box body. The plug wire is provided with a pressure plate, and the pressure plate is provided with a pressure plate telescoping assembly, so that the pressure plate can be tightly pressed against the communication port under the telescoping effect of the pressure plate telescoping assembly, and the connection stability of the sensor and the detector can be ensured. According to the utility model, the detector and the sensor can be prevented from shaking in the driving process of the automobile to cause the falling of the communication port, so that the stab