How to handle the u0100 fault code?

[McGideon]

u0100 fault code indicates a communication loss with the engine control module, mostly caused by wiring issues. When encountering this fault, it is recommended that the owner take the vehicle to a 4S shop for repair. The engine control module, commonly referred to as the ECU, is the brain of the car's engine. The ECU collects data from various sensors, processes it, and then controls the engine's operation through actuators. Without the ECU, the engine would not function properly. The ECU has self-diagnostic and protection functions. When a system fault occurs, it automatically records the fault code in RAM and implements protective measures, reading substitute programs from the inherent program to maintain engine operation. At the same time, these fault messages will be displayed on the dashboard and remain lit, allowing the owner to detect the problem in time.