The mystery of the flashing ESC light.
Perhaps you have a Genuine Stella 125 Automatic scooter and have been wondering what the blinking ECS light is about. The mystery of the blinking ECS light is a bad sensor! I have spent hours researching this and kept coming up empty. What to do about the blinking ECS light? The ECS light will blink when one of 4 sensors is bad.
The sensors are
- TPS Throttle Position Sensor
- Air Valve. This is a solenoid that connects to the side of the carburetor. The solenoid is located under the body.
- Engine Temperature Sensor
- Oxygen Sensor
Below is a diagram showing the different codes. You have to look at the light and count the number of times it flashes in a cycle. If there are several codes, they will flash in order.