Troubleshooting | Error Code 25

In this article: You’ll learn what Error Code 25 means and how to safely clear it by checking and adjusting the brake sensor on your bike.

This Article Applies to the Following Bikes

Difficulty

★☆☆ Easy

Estimated Time

0 - 5 Min

Before You Start

Tools you will need

• Adjustable Wrench (included in your bike tool kit)
• Multitool with Allen Wrenches (included in your bike tool kit)

Preparation

• Power off your bike.
• Ensure the bike is stable on its kickstand.

What Error Code 25 Means

Error/Fault 25 indicates that the Electronic Brake Shutoff (EBS) is active.

Release the Brake Levers

Your brake levers include a built-in sensor that tells the motor to stop whenever the brakes are engaged. If your brakes are being pulled, the motor will shut off as a safety feature.

Steps

• Make sure both brake levers are fully released

• Power the bike back on

If the error clears, no further action is needed.

Adjust Motor Inhibitors (Brake Sensors)

Your bike has two motor inhibitors (one per brake lever). Their job is to instantly cut motor power when braking.

If they become misaligned, loose, or too tight, the bike may think you’re braking even when you’re not — causing Error/Fault 25 to appear on the display.

Steps

1. Locate the small set screw and loosen it about two full turns using the smallest (2mm) Allen wrench in your Multitool.

2. Using your adjustable wrench, gradually turn the bolt securing the cable outward until Error/Fault 25 clears.

3. Re-tighten the 2mm set screw.

If the Bike Still Displays Error/Fault 25

If you have completed all steps above and the bike still displays Error/Fault 25, please submit a support ticket so our MOD BIKES team can guide you through advanced diagnostics.

Troubleshooting

• Bike displays Error 25 → Ensure both brake levers are fully released, then power the bike back on.
• Brake sensor too tight → Loosen the small set screw on the brake sensor ~2 turns until Error 25 clears.

FAQs

• What causes Error 25?
  A brake lever is engaged or the brake sensor is too tightly adjusted.
• Will Error 25 stop the bike from functioning?
  Yes, the motor will cut off whenever the brake sensor detects the lever is pulled. The bike will function normally once the brakes are fully released.

Warning

⚠️ Important Safety & Liability Notice

Error 25 is a safety feature that shuts off the motor whenever the brakes are engaged. Only attempt to adjust the brake sensors if you are confident in performing small mechanical adjustments. Improper adjustments may result in unexpected motor or brake behavior, which could lead to injury or damage. 

If you are unsure, please seek assistance from a qualified MOD BIKES technician. MOD BIKES is not liable for injury, damage, or loss caused by improper use, adjustment, or failure to follow these instructions. Always follow local laws and manufacturer guidelines.