503 - Speed Sensor Fault
Speed sensor signal is not detected correctly.
Medium severity
Caution rideability
Soon urgency
What it means
Wheel speed feedback is missing.
Common causes
- Magnet position
- Sensor cable fault
- Dirty sensor
Symptoms
- No speed display
- Assist stops
- Warning while riding
How to fix it
- Align magnet
- Clean sensor
- Check cable