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Troubleshooting

Velotric Discover 1 and Nomad 1: error code 21 to 30 on the display

What error codes 21, 22, 23, 24, 25, 26 and 30 mean on a Velotric Discover 1 or Nomad 1, the safe checks to try for each, and when to stop and contact Velotric, as the manual advises.

Last edited Nov 9, 2026 by Pedalwise team Edit History Add a subpage

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Your Velotric Discover 1 or Nomad 1 shows a two digit number on the display and the motor stops or won't start. The shared Discover 1 and Nomad 1 owner's manual lists seven error codes and says to stop riding and contact Velotric whenever one appears (Discover 1 and Nomad 1 manual). Velotric's support article for the Nomad 1 Plus gives the same list and the same advice (Velotric error codes). Short answer: the code names the circuit that failed. A few quick checks can clear a brake, throttle or battery code. Motor, current and communication codes usually need Velotric or a shop.

Do any plug checks with the battery switched off or removed. Don't open the controller, motor or battery, and don't keep riding with a code showing.

Error codes

From Velotric's manual and support article (manual, support article):

  • 21: abnormal current, or a damaged MOS tube (a power transistor in the controller)
  • 22: throttle fault
  • 23: a phase is missing on the motor
  • 24: motor hall sensor fault
  • 25: abnormal brake signal
  • 26: battery voltage too low
  • 30: communication fault

Codes differ between Velotric displays and models. Newer models such as the Discover 2 and Nomad 2 do not print a code table in their manuals and point owners to Velotric support instead (Discover 2 manual, Nomad 2 manual).

Most likely cause

Each code points at one part of the system. The manual's troubleshooting table lists the usual suspects when the motor won't respond: a low battery, brakes being applied, a throttle that hasn't reset, loose wiring, a loose or damaged motor plug wire, and a damaged motor, controller or PAS sensor (Discover 1 and Nomad 1 manual). Upway, an e-bike retailer with its own repair shop, matches the codes to checks in the same way: lever return for 25, throttle and its plug for 22, the motor cable plug for 23 and 24, a full charge for 26, and the main harness for 30 (Upway on Velotric codes).

Other causes to rule out

  • A battery that isn't fully seated or a dirty contact, which Velotric lists first for a dead or flickering bike (Velotric troubleshooting guide).
  • Moisture after riding in the rain. Velotric says to switch off, remove the battery and let the bike air dry, without a hair dryer (same guide). See e-bike got wet.

How to confirm

  1. Note the code and when it appears: at power on, when you brake, on throttle, or over bumps.
  2. For 25: power off, check that both levers spring fully back, then power on with your hands off the levers (Upway on Velotric codes).
  3. For 22: make sure nothing is pressing the throttle and that it returns freely, then restart (same source). See throttle not working.
  4. For 26: charge the battery fully and retest (Upway on Velotric codes).
  5. For 23, 24 or 30: remove the battery, then follow the motor cable from the rear axle, and the display cable from the handlebar, looking for pinched or rubbed spots. Reseat any plug you can reach without tools, checking for bent pins (Velotric troubleshooting guide, inspect and clean connectors).
  6. For 21: reseat what you can reach and stop. Velotric's manual says to contact them for any code (manual).

Fix options

Clear a brake, throttle or battery code (easy)

Releasing a stuck lever, freeing the throttle or charging the battery often clears 25, 22 or 26.

Reseat a motor or display plug (easy)

A loose plug after a wheel removal or a knock can cause 23, 24 or 30. Free.

Replace the throttle, brake lever, PAS sensor or cable (moderate)

When one plug-in part is faulty, Velotric support can supply the matching part. Its support page links owner's manuals, help articles and a parts and accessories store (Velotric support).

Controller or motor replacement (pro or Velotric support)

Codes 21, 23 and 24 that return after the checks usually mean a controller or motor diagnosis (Upway on Velotric codes). Hall and phase problems can also come from a cable crushed near the axle, so a shop should test before replacing parts (EM3ev hall guide).

Parts

  • Throttle
  • Brake lever
  • Pedal assist sensor
  • Motor cable and hall sensors
  • E-bike controller
  • Hub motor

Videos

Error 25: Brake Sensor Error: Ride1UP from Ride1Up: Another e-bike maker explains error 25 and the brake lever sensor check, which matches what this code means on a Discover 1 or Nomad 1.
Error 30: Communication Error: Ride1UP from Ride1Up: The same maker covers error 30, a lost link between display and controller, and how to trace and reseat the plugs on that cable.

When to get a pro

Contact Velotric or a shop for any code that returns after these checks, for burnt or melted plugs, or for a motor that runs rough. More help: Velotric troubleshooting and e-bike error codes.

Sources

Stuck after these checks? Find a shop near you.

Need a pro?

If these steps didn't fix it, find a shop near you in our partner network. For battery or wiring trouble, look for shops marked Battery and electrical.

Talk

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