Bafang error 48: Battery SOC too low
Bafang CAN systems (M400/M500/M600/M620, DP C18 CAN, 850C/860C CAN)WarningRide with caution
The BMS reports the state of charge is below the minimum allowed, so power is limited or cut. Either the pack is really empty or the SOC estimate is off.
Likely causes
- Battery empty
- SOC calibration drift after many partial charges
- Deep discharge after long storage
How to fix Bafang error 48
- Charge the pack fully
- Do an occasional full cycle (empty to full) to recalibrate the gauge
- Store at 40-70% charge; check monthly during long storage
- Have the BMS checked if a full charge still shows the code
Go to a dealer if: Go to a shop if the code persists after a full charge.
Warranty: Battery warranty applies to BMS faults; storage neglect is excluded.
Typical cost: Free if charging fixes it; battery replacement EUR/USD 300-700.
Warranty: Battery warranty applies to BMS faults; storage neglect is excluded.
Typical cost: Free if charging fixes it; battery replacement EUR/USD 300-700.
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 error 48?
Charge fully; the code clears when SOC is back in range.
Can I keep riding?
Only until the next charge; power will be limited.
Warranty?
Yes if the BMS is misreading.
Related Bafang codes
Not an official Bafang document. Compiled from workshop experience and public service information; details can differ per system version and bike brand.