04 - Throttle Not Returned
Throttle signal did not return to zero at startup.
Medium severity
Caution rideability
Soon urgency
What it means
Controller sees throttle active when powering on.
Common causes
- Throttle stuck
- Water in throttle
- Throttle wiring fault
Symptoms
- Error at startup
- No throttle response
- Bike refuses assist
How to fix it
- Release throttle before startup
- Dry throttle
- Check connector
- Replace throttle