ECU power-off method, device and equipment and storage medium

The invention provides an ECU power-off method, device and equipment and a storage medium, and the method comprises the steps: obtaining a current mode state of an ECU when a power-off request is detected; performing mode switching based on the mode state so as to change power-off flag bit information of the ECU; and determining an execution sequence of each preset power-off function according to the power-off flag bit information, and executing each power-off function according to the execution sequence to complete power-off. According to the ECU power-off method provided by the invention, the power-off flag bit information is changed through mode switching, the execution sequence of the power-off function is controlled, the power-off sequence is definite, the logic is clear, correct and efficient power-off can be realized, the error probability is small, and the error probability of the ECU power-off link can be reduced, so that the risks of data loss, ECU crash or incapability of power-on again are reduced