Ever had your ride interrupted by a strange “E06” or puzzling “Error 30” flashing on your eBike display? You’re definitely not the only one. These codes can pop up from nowhere, often leaving riders scratching their heads. Unfortunately, many people assume it means an expensive repair or an urgent service call.
At Epic Cycles, we want you to feel confident handling these situations. This guide is here to break down the most common eBike error codes, explain what they actually mean, and walk you through how to respond. Whether you’re commuting across the city or heading out for a weekend adventure, a bit of troubleshooting knowledge can go a long way.
How Error Codes Work
Your eBike is packed with electronics: a motor, controller, battery, sensors, and display, all working together to give you a smooth, responsive ride. These parts are in constant communication. When something isn’t quite right, your bike sends out a warning through an error code.
These e-bike error codes are meant to help pinpoint where the problem is. But without context, they can feel cryptic. Even minor issues, if ignored, can grow into bigger (and costlier) problems. Learning what these codes mean allows you to take quick action, often fixing the issue yourself without needing to book a service.
Quick Error Code Lookup Table
We’ve put together a quick reference guide for some of the most common error codes across popular brands sold at Epic Cycles:
| Code | Meaning | Affected System | Quick Fix | Severity Level |
| E06 | Battery undervoltage | Battery | Charge battery, check connector | Medium |
| Code 21 | Voltage anomaly | Controller/Battery | Inspect charger and power cable | Medium |
| E07 | Motor error | Motor | Reseat motor cable | High |
| Code 24 | Torque sensor fault | Motor/Sensor | Inspect sensor alignment | High |
| Code 22 | Electric bike throttle error | Throttle | Clean throttle connector | Low |
| E10-E12 | Brake sensor fault | Brakes/Sensors | Adjust lever spacing, clean sensor | Low |
| Code 30 | E-bike communication error | Display/Controller | Reconnect Display Cable | High |
| Error 004 | Firmware mismatch | Controller/Display | Attempt reset or update firmware | Medium |
Code Categories Explained
A. Battery/Voltage Errors (E06, Code 21)
If your eBike suddenly shuts down or refuses to start, you could be dealing with a battery-related error like E06 or Code 21. These errors usually indicate a voltage drop or inconsistent power delivery.
Quick Fixes:
- Make sure you’re using the correct charger for your battery.
- Double-check the battery connections. Loose or dirty connectors are a common culprit.
- Avoid completely draining your battery too often. This puts unnecessary strain on its cells.
Long-Term Tips:
Especially in Canadian winters, cold weather can drop your battery’s voltage faster than you expect. Store the battery indoors whenever possible, and charge it at room temperature. These simple steps can help you avoid triggering common battery-related eBike error codes.
B. Motor & Sensor Issues (E07, Code 24, Stromer-specific codes)
If your pedal assist isn’t working properly or your motor feels jerky, there’s a good chance your eBike is trying to alert you to a motor or sensor issue.
DIY Fixes:
- Start by unplugging and replugging the motor cable.
- Check the wiring for damage or moisture.
If you ride an Intense e-bike, be mindful of how sensitive the torque sensors can be. If you see a torque sensor error, it might be due to crank arms that are too tight. Loosening them slightly and recalibrating the system using the Shimano Steps software can make a big difference.
For Stromer bikes, the OMNI interface can be a huge help. A quick Stromer OMNI diagnostic can often highlight whether a recalibration or update is needed. These high-tech bikes make it easier to isolate the issue, especially if the motor starts acting up.
C. Throttle & Brake Sensor Errors (Code 22, E10–E12)
These codes are common with models like Bluerev and Magnum and are usually less serious than they seem.
A Code 22 electric bike throttle error can often be fixed by cleaning the throttle connection. Make sure it isn’t being held open when you turn the bike on, as that can sometimes trigger the fault.
Brake sensor errors (E10 to E12) usually come down to magnet alignment. Check that the brake lever sensor magnet is correctly positioned and that your levers aren’t too tight. A quick adjustment is often all it takes to get things running smoothly again.
D. Display & Communication Faults (Code 30, Error 004)
Communication issues between the controller and the display unit can be frustrating. When your e-bike display is not working or you see Error 30, it usually means the connection between components has been interrupted.
How to fix e-bike error 30:
- Turn the bike off.
- Disconnect and inspect the display cable.
- Reconnect it carefully and restart the bike.
If Error 004 shows up, it might be a firmware mismatch. Many brands release firmware updates that help prevent these issues. If you’re unsure how to update, we’re happy to help at Epic Cycles.
Also Read: A Comprehensive Guide to Electric Bike Maintenance
Brand-Specific Troubleshooting Tips
Bluerev
Bluerev bikes are known for being affordable and commuter-friendly. A common issue we see is Bluerev error 22, usually related to throttle engagement. If you’re seeing this code, a soft reset of the LCD display often clears it. Just unplug the display, wait 30 seconds, and reconnect.
Magnum
Magnum models are built for both city and trail use, but even these rugged eBikes can display Magnum e-bike error code 30. Often, it’s just a misaligned speed sensor magnet. Realigning the magnet and ensuring all connections are snug usually solves the issue.
Intense
Performance-driven Intense e-bikes require precise torque sensor readings. If you’re dealing with Intense e-bike torque sensor issues, it could be due to overtightened crank bolts or sensor drift. Calibrating the torque sensor via Shimano’s software should bring things back to normal.
Stromer
Stromer bikes use advanced onboard diagnostics via their OMNI system. Running a Stromer OMNI diagnostic through the app is your best first step if a fault shows up. Calibration fixes most motor issues. If that doesn’t work, our service team is just a call away.
When to Fix It Yourself vs Visit Epic Cycles
So when can you tackle the issue yourself, and when is it time to get professional help?
DIY is usually safe when:
- You see only one error code.
- Your bike still turns on and rides fine.
- The fix involves something simple, like a loose connection.
Bring your bike in when:
- You’re seeing multiple error codes.
- The motor cuts out while riding.
- The display is flashing or non-responsive.
Not sure what your error code means or how to fix it? Contact Epic Cycles for expert help, or bring your eBike in for a free diagnosis. Our team specializes in every brand we sell, so you can trust you’re in good hands.
Prevent Future Errors
Taking care of your eBike now can save you a lot of hassle down the road. Here are a few tips to keep error codes at bay:
- Keep all cables neatly routed and avoid sharp bends.
- Store your battery indoors in cold weather and charge it in a warm, dry place.
- Check connectors regularly and clean them if needed.
- Always use parts and accessories designed for your specific bike. You can find compatible components by browsing our full inventory of replacement parts and accessories at EpicCycles.ca.
Ride Smarter, Stay in Control
Understanding your eBike error codes doesn’t just make you a better rider. It gives you control over your ride and peace of mind when things go wrong. Most of the time, these errors aren’t serious and can be handled right at home.
That said, Epic Cycles is here whenever you need us. Whether it’s expert advice, a tricky repair, or a simple reset, we offer complete e-bike service to keep you riding with confidence.
Need parts or advice? Contact Epic Cycles – your trusted Canadian eBike expert. Or browse replacement parts and accessories at EpicCycles.ca.
