Common E-Bike Problems and Their Solutions

Picture of a black E-bike parked near trees
Owner at - EbikeWizard

I am excited to be able to help people get by with their ebike journey. Here at, I share my expertise and over a decade of experience riding, testing, and troubleshooting ebikes of all kinds.

E-bikes have been gaining attention for a long time now. Ever since the global pandemic, these bikes have become the preferred mode of transport for many individuals. From being environment-friendly and comfortable to saving us the hassle of getting stuck in traffic, electronic bikes have many benefits for us to enjoy.

However, before investing in an electric bike, one must prepare themselves and conduct thorough research. There are several Ebike problems and repairs that you must research. From tires to the battery and the disc brake system; here are some common electronic bike problems and their solutions:

1. Battery Issues

The bike’s battery can sometimes cause havoc in your life and make things more problematic than ever. Battery issues are not as common in newer bikes. However, after a while you might come across some problems, but don’t worry; these issues can easily be resolved with a few inspections. First, let’s take a look at some of the most common signs of battery problems:

  • Your bike won’t charge or discharge
  • It will take several attempts to start
  • The battery may get cut off while driving
  • Your range may decrease
  • The battery pack may start swelling


The first step will be to check the voltage of the battery. With the help of a voltmeter, check whether the bike’s voltage is where it needs to be. There may be a chance that a fuse has blown. However, it is also pertinent to mention, if your e-bike has been sitting in the garage without getting regularly charged, you may need a battery replacement. Check whether the LED light is turning on or not; if it’s not switching as you turn the bike on, you may need to get the battery back inspected.

Here are some other possibilities:

  • The battery charger has defected
  • If your battery keeps cutting off, it may be failing or inefficient. Lower the assist mode for a quick fix.
  • Check the alignment of the prongs. You can fix them using a wrench.
  • Evaluate and ensure that the charger port is working.

2. Problems with the Brake

Spotting and catching issues with the brake are relatively easy. You may find it hard to press the brake or it might not work at all. In addition to this, you may also notice the brake’s decreased responsiveness. Issues with the brake of an electric bike can be very dangerous. So, we suggest not using the bike till the issue[s] is resolved.


If you dropped your e-bike or bumped it somewhere at high speed, the damage to the handlebars may cause the brakes to malfunction. Evaluate the handlebars and brake levers to spot the issue. You can fix your brake levers easily with a tutorial. However, if the switch itself is not working, you may need to get it replaced.

If you can locate the controllers and inspect the wires, you can cut them off completely. However, this is not a safe solution for a vehicle. If your bike is old, the shoes, brake pads, or cables may need to get replaced. You may also want to adjust the brake cable to ensure they are responsive.

3. Broken or Ineffective Throttle

The throttle of an e-bike, when turned on, turns it into a motorcycle, meaning you will not have to peddle at all when in throttle mode. Common signs of the twist throttle not functioning properly include the inefficiency of it turning off or the throttle turning on without you twisting it.


Don’t overuse the throttle and be careful when pulling it; it needs to be pulled back gently. So, instead of letting it to after using it, you should gently release it to its original position. You can also test the throttle with a multimeter and your motor controller. If the throttle signal reaches 4V, it means there are no issues with the throttle.

You can easily find a replacement for the twist throttle online or from a nearby ebike repair shop.

4. Inefficient Pedal Assist

An inefficient pedal-assist would mean that you’re pedalling harder even when it is turned on. You may also notice that the torque sensor is out of alignment. Problems with the sensor are indicated by infrequencies in the assist mode. There are several things you can do to fix problems with the pedal assist.


Readjust the torque sensor and reconnect it to the pedal-assist system. However, if you have a ring of magnets in the front of the bike, you may need to check the position of the magnets. Adjusting the magnets closer to the disc is relatively easy and can be done with simple tools. If you don’t know what to do, contact a professional for help.

5. Bad Controller

The controller is the brain of an e-bike; it is connected to all the other electric components of the bike. The controller processes the input and tells the different components what to do. Typically, the controller is connected to the throttle, battery, and motor.

If you notice disconnected or damaged wires on the controller, you may need to get them replaced. Let’s take a look at some of the things you can do on your own to fix the issues:


Make sure the controller is switched on and check if the fuse is damaged or burned. If your bike has a circuit breaker, it’s a good idea to evaluate its condition as well. If you’re unable to detect the issue after testing the function of all the wires, you can also try to smell the controller. If it has a burning plastic or metal like odor, you may need to go to a professional. Unfortunately, a bad controller can’t be fixed at home and you may need to hire someone for this job.

Concluding Thoughts

Mostly popular in China and European countries, e-bikes are now gaining popularity in America. With so many options to choose from, you should consider all aspects and conduct thorough research before making a purchase decision. A pocket-friendly electric bike will be useless if it frequently needs repairs. In the end, it’s best to be prepared for any circumstance that may present during your biking adventures.

kyleOwner at - EbikeWizard

I am excited to be able to help people get by with their ebike journey. Here at, I share my expertise and over a decade of experience riding, testing, and troubleshooting ebikes of all kinds.

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I am excited to be able to help people get by with their ebike journey. Here at, I share my expertise and over a decade of experience riding, testing, and troubleshooting ebikes of all kinds.

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