Aventon error 04: Throttle not in home position
Aventon e-bikes with Bafang hub motor (Pace, Level, Aventure, Sinch, Soltera) and Aventon colour or LCD displayFix at homeRide with caution
Aventon displays follow the Bafang UART error list; 04 means the throttle read above its idle voltage when the bike was switched on. No assist until the throttle reads rest.
| Drive system | Aventon e-bikes with Bafang hub motor (Pace, Level, Aventure, Sinch, Soltera) and Aventon colour or LCD display |
| Severity | Fix at home |
| Keep riding? | Ride with caution |
| Typical cost | Throttle about USD 25-40; controller about USD 100-180. |
Likely causes
- Throttle pressed while switching on
- Sticky thumb throttle
- Water in the throttle connector
- Damaged throttle sensor or wire
How to fix Aventon error 04
- Power cycle without touching the throttle
- Check the throttle returns freely; clean it
- Unplug the throttle: if the code clears, replace the throttle
- Dry and clean the connector
- If 04 stays with the throttle unplugged, contact Aventon support about the controller
Go to a dealer if: Go to an Aventon dealer if a new throttle does not fix it.
Warranty: Aventon gives a 2-year limited warranty on frame, motor, battery and electronics through its dealer network; open a ticket with Aventon support before replacing parts.
Typical cost: Throttle about USD 25-40; controller about USD 100-180.
Warranty: Aventon gives a 2-year limited warranty on frame, motor, battery and electronics through its dealer network; open a ticket with Aventon support before replacing parts.
Typical cost: Throttle about USD 25-40; controller about USD 100-180.
Still stuck? Take a photo of the display and show it to a local e-bike workshop. Bring the bike's system name (e.g. Bosch Performance Line CX) and the exact code; that saves diagnostic time and money.
Frequently asked
Can I reset Aventon error 04?
Power cycle with the throttle at rest.
Can I keep riding?
Yes as a regular bike; unplugging the throttle usually restores pedal assist.
Warranty?
Yes within the 2-year electronics warranty unless water damage.
Related Aventon codes
Manuals and video
Not an official Aventon document. Compiled from workshop experience and public service information; details can differ per system version and bike brand.