418 - Speed Sensor Signal Error
The speed signal is missing, weak, or not believable.
Medium severity
Caution rideability
Soon urgency
What it means
The system cannot read wheel rotation correctly.
Common causes
- Magnet misalignment
- Dirty speed sensor
- Damaged sensor cable
Symptoms
- Wrong speed reading
- Assist cuts out
- Display shows no speed
How to fix it
- Align spoke magnet
- Clean speed sensor
- Check cable routing
- Replace sensor if damaged