SW900 Display Error Codes & Problems
Rectangular LCD with a separate handlebar button pad. Common on conversion kits and many complete e-bikes.
About the SW900
- The SW900 shows faults as a plain number (0 to 13) in the multi-function area, next to its "Error" indicator. That's why these pages are named "Error 7" and so on, not "E07". 0 means normal. source
- The SW900 is commonly reported to come in different versions for different controllers. If your SW900 shows a number that isn't in this list (like 21 or 30), use the Not sure pages. source
2 Pick the code on your screen
SW900 code list, from the manual. 13 codes.
No code? Pick your problem
- No powerDisplay won't turn on
- Cuts out on hillsLoses power climbing
- Throttle not workingPedal assist works, throttle doesn't
- Pedal assist not workingMotor doesn't help when pedaling
- Battery not chargingCharger light or battery won't charge
- Speed shows 0Speedometer wrong or stuck at 0
- Motor stutters or jerksJerky, grinding or juddering motor
- Battery dies fastRange has dropped