Home › Dapu › Error 23

Dapu error 23: Abnormal motor hall signal detected

Dapu controller (used by Pedego, Batavus, Koga and other European brands)Dealer neededDo not keep riding

The controller has seen a constant or abnormal hall signal from the motor for longer than it expects. Hall sensors tell the controller where the motor rotor is, so a stuck or scrambled reading means the controller cannot drive the motor safely. As a result the system cuts motor assist, the speed readout drops to zero, and walk assist is disabled until the fault clears.

Drive system	Dapu controller (used by Pedego, Batavus, Koga and other European brands)
Severity	Dealer needed
Keep riding?	Do not keep riding
Typical cost	A new motor cable typically runs €30-€80 fitted, a replacement controller €120-€250, and a complete motor €250-€500 fitted depending on the bike brand and motor type.

Likely causes

Motor cable pinched, chafed or cut where it enters the frame or at the swingarm pivot
Corroded, wet or loose pins in the motor or controller connector
Motor stalled under heavy load or on a steep hill
Worn hall sensor inside the motor
Bent or pushed-back pins from a previous disconnection
Water ingress after washing or riding in heavy rain

How to fix Dapu error 23

Stop riding, switch the system off and remove the battery.
Visually inspect the motor cable along its full length for cuts, kinks, pinch points and chafe, especially where it passes through frame grommets or near the dropouts.
Unplug the motor cable at both the motor end and the controller end, check the pins and sockets for corrosion, moisture or bent contacts, then dry and reseat firmly.
Confirm the motor spins freely by hand with the bike off the ground; a seized motor will re-trigger the fault.
Reconnect the battery, power up and ride briefly on flat ground to see whether the code returns.
If error 23 still shows after the cable and connectors are confirmed good, hand the bike to a dealer for controller or motor replacement.

Go to a dealer if: The code returns after the motor cable and both connectors have been checked, because that points to a failed controller or motor that needs dealer-level diagnosis and parts.
Warranty: A genuine hall sensor, controller or motor failure inside the usual two-year warranty window is normally covered as a component fault, while crash damage, pressure-wash water ingress and worn connectors are treated as owner damage and excluded.
Typical cost: A new motor cable typically runs €30-€80 fitted, a replacement controller €120-€250, and a complete motor €250-€500 fitted depending on the bike brand and motor type.

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 dapu error 23?

Switching the system off and back on will clear the code once, but if the hall signal fault is still present it will return within seconds. A reset alone does not fix a damaged cable, connector or sensor.

Is it safe to keep riding with this error?

No. The controller disables motor assist to protect itself, so you are riding an unpowered heavy bike, and continuing with an intermittent hall signal can overheat the controller or damage the wiring.

What does the repair usually cost and is it warranty?

Expect €30-€80 for a cable, €120-€250 for a controller and €250-€500 fitted for a new motor. Within the first two years a genuine component failure is usually covered, but water damage and crash damage are not.

Related Dapu codes

26 · Hall sensor signal fault in the motor 21 · Motor Drawing Too Much Current 27 · Throttle signal above normal range 10 · Display lost communication with controller

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.