Dapu error 25: Brake signal stuck on the controller
The Dapu controller has monitored the brake cut-off input and found it held in the active position for longer than two minutes. Because the controller cannot tell if you are actually pulling the brake, it disables motor assist as a safety measure. Walk assist and pedal assist both stop working, and the speed reading usually drops to zero until the fault clears.
| Drive system | Dapu controller (used by Pedego, Batavus, Koga and other European brands) |
| Severity | Fix at home |
| Keep riding? | Ride with caution |
| Typical cost | A aftermarket compatible brake lever with cut-off switch is roughly €15 to €40 in parts, a dealer job for lever and cable replacement typically runs €50 to €150 including labour, and full diagnostic time at a shop is usually billed at €30 to €60. |
Likely causes
- Brake lever pivot gummed up so the lever does not spring back fully
- Stretched or kinked inner cable keeping the lever partially engaged
- Corroded or damp brake cut-off switch contacts inside the lever housing
- Connector at the controller or lever contaminated with water or road grime
- Brake lever return spring weakened or broken from age or crash impact
- Cable adjuster turned in too far so the lever sits slightly pulled at rest
How to fix Dapu error 25
- Power the bike off and remove the battery before any inspection.
- Squeeze and release each brake lever, checking that both return crisply without sticking.
- Inspect the cable housings for tight bends or kinks near the lever and the frame entry.
- With the battery still out, unplug each brake cut-off connector and check for green corrosion or moisture on the pins; clean with contact spray and let them dry fully.
- Reconnect, refit the battery and ride briefly to see if the code clears; if it returns, disconnect one brake at a time to identify which lever is signalling stuck.
- If the fault follows a specific lever, replace that brake lever assembly or the inner brake cable that operates it, as the magnetic switch inside is the part that has failed.
- Take the bike to an authorised dealer for diagnostic confirmation and replacement of the brake lever or the integrated cut-off switch if cleaning and cable adjustment do not resolve it.
Warranty: A genuine brake cut-off switch or lever failure inside the usual two-year warranty window is normally treated as a manufacturing defect and covered, while crash damage, water ingress and normal wear on cables are excluded.
Typical cost: A aftermarket compatible brake lever with cut-off switch is roughly €15 to €40 in parts, a dealer job for lever and cable replacement typically runs €50 to €150 including labour, and full diagnostic time at a shop is usually billed at €30 to €60.
Frequently asked
Can I reset dapu error 25?
Switch the system off, remove the battery for sixty seconds and refit it, then power on without touching either brake lever. If the brake signal is genuinely stuck the code will reappear within two minutes and the lever or cable still needs work.
Is it safe to keep riding with error 25?
The bike still rolls and brakes normally, but motor assist is cut off so hills and headwinds will be harder. Ride only on quiet roads to the next stop, because the lights and walk assist may also be disabled on some Dapu builds.
How much will this cost and is it under warranty?
A simple cable adjustment and connector clean is usually under €20 in parts, while a new brake lever with cut-off switch fitted by a dealer lands around €80 to €150. Where the lever has failed inside the two-year warranty period and there is no sign of crash or water damage, the dealer typically covers the part.
Related Dapu codes
Official source: Dapu controller error chart, Pedego dealer service guide
Not an official Dapu document. Compiled from workshop experience and public service information; details can differ per system version and bike brand.