There are generally three reasons for the charger failure light flashing: 1. Car end failure: The cause of the failure is the electric vehicle itself, including the charging port itself, the high-voltage wiring harness failure from the charging port to the vehicle charger, the vehicle charger itself and the associated control unit, network and other faults; 2. Gun end failure: mainly refers to the fault of the charging gun itself, or the fault of the vehicle portable charging gun; 3. Power supply equipment and charging pile failure: mainly refers to the problem of the AC power supply side during charging, which causes the system to fail to charge normally, especially when charging with household electricity, if the socket is inappropriate and the line is poorly grounded.