Why do the lights stay on after a car is flooded?

[FinleyRose]

If the lights stay on after a car is flooded, it is likely due to a CAN bus fault in the ECU. Below is a detailed explanation of the reasons why the lights stay on after a car is flooded: 1. Likely a CAN bus fault in the ECU: Poor contact in the ECU's CAN interface causes all dashboard warning lights to illuminate. 2. Excessive carbon buildup: Excessive carbon deposits in the throttle body, idle speed motor, intake tract, and combustion chamber can cause the engine to stall. Excessive carbon buildup and dirt in the intake tract alter the cross-sectional area of the air passage, preventing the control unit from precisely regulating idle air intake. This results in an overly rich or lean air-fuel mixture, making the engine difficult to start and causing all dashboard warning lights to illuminate. 3. Poor fuel performance in the electronic control system: Due to inadequate fuel pressure maintenance in the electronic control system, low fuel pressure leads to poor fuel atomization, making the engine difficult to start and causing all dashboard warning lights to illuminate.