What is the fault when the ESP light of Audi A6 is on?

[VanRachel]

If the ESP fault light comes on and then goes off after restarting, it is generally caused by the following reasons: 1. If the ESP fault light is flashing, it means the system is currently working, which is a normal phenomenon. 2. If the fault light is constantly on and no other fault lights are on, it is usually caused by the loss of signal from components of the vehicle stability system, commonly due to faults in the steering angle sensor, lateral acceleration sensor, or wheel speed sensor. 3. If it lights up together with the engine warning light or other system warning lights, it may be caused by the loss of signal from a key electrical component, resulting in the vehicle system being unable to function properly. As long as the ESP fault light is constantly on, due to its impact on driving safety, it is essential to drive the vehicle to a repair facility as soon as possible. Using professional diagnostic equipment to retrieve the stored fault codes can further determine the cause of the fault and eliminate it.