What is the problem when all the dashboard warning lights are on?

[DiMary]

The reasons for all dashboard warning lights being on are as follows: 1. CAN bus failure in the ECU, or poor contact in the ECU's CAN interface. The ECU needs to be replaced. 2. Excessive dirt and carbon deposits in the car. This causes abnormal air circulation, making it impossible to accurately control the normal air intake, resulting in unstable gas content and poor engine performance. Carbon deposits need to be cleaned, and related components should be inspected and replaced. 3. Low fuel pressure. This leads to poor system atomization, making the car difficult to start. Fuel pressure needs to be increased, and then the car can be started. 4. Vehicle self-inspection during startup, which is a normal phenomenon. Simply start the vehicle.