E11 - Communication Send Error
Display commands are not reaching controller reliably.
Medium severity
Caution rideability
Soon urgency
What it means
Controller is not receiving expected control data.
Common causes
- Display cable issue
- Controller port fault
- Protocol mismatch
Symptoms
- Buttons not working
- Mode not changing
- No assist
How to fix it
- Reconnect display
- Inspect pins
- Try compatible display/controller