Troubleshooting
What’s wrong with my e-bike?
Start with the symptom. Each page lists likely causes, safe checks you can do without tools (and a few with a multimeter), the point where you should stop, and the parts or tools that usually fix it.
Not sure what’s wrong? Get an E-Bike Assessment — describe the symptom, add photos, get a clear report.
Get an AssessmentE-Bike Won't Turn On
E-bike dead with no lights or display? Check the battery, key, connectors and fuse in a safe order, learn what a multimeter reading means, and when to stop.
6 likely causes · 7 safe checks
E-Bike Battery Won't Charge
Charger light wrong, pack stuck at the same bars, or no response? Test the outlet, charger output voltage, charge port and BMS state before replacing anything.
6 likely causes · 8 safe checks
E-Bike Charger Light Stays Green
Charger light green the moment you plug in? The charger sees no load. Learn to tell a full battery from a BMS lockout, bad port or dead charger, step by step.
5 likely causes · 7 safe checks
E-Bike Throttle Not Working
Throttle dead but pedal assist works? Check display settings, zero-start rules, brake cutoff switches, the throttle connector and hall sensor before buying.
6 likely causes · 7 safe checks
E-Bike Motor Cuts Out
Motor cutting out on hills, over bumps or after a hot ride? Learn how voltage sag, loose battery contacts, brake cutoffs, thermal limits and sensors cause it.
6 likely causes · 7 safe checks
E-Bike Display Not Working
Blank, flickering or error-filled e-bike display? Rule out battery power, the display connector and cable damage, then decode the code before replacing it.
6 likely causes · 7 safe checks
E-Bike Brake Rubbing
Disc brake rubbing or ringing on your e-bike? Spot a misaligned caliper, bent rotor, worn pads, loose axle or sticky piston and fix what is safe to do at home.
6 likely causes · 7 safe checks
E-Bike Tire Keeps Going Flat
Repeat flats on your e-bike? Learn to find thorns and goat-heads, rim tape gaps, pinch flats from low pressure, valve leaks and tire wear, and fix each one.
6 likely causes · 8 safe checks
E-Bike Chain Keeps Falling Off
Chain dropping on your e-bike? Learn how limit screws, B-tension, a bent hanger, a worn chain or cassette and shifting under motor load cause it, and fix it.
6 likely causes · 8 safe checks
E-Bike Battery Drains Quickly
Range dropped or the battery dies faster than it used to? Separate normal causes like heat, assist level, tire pressure and brake drag from real pack wear.
6 likely causes · 7 safe checks
E-Bike Won't Accelerate
Display works but the motor will not go? Check brake cutoff switches, assist level, walk mode, PAS and throttle signals, the motor connector and error codes.
6 likely causes · 7 safe checks
E-Bike Pedal Assist Not Working
Pedal assist dead or delayed while the throttle works? Check assist level, brake cutoffs, the cadence magnet disc, sensor gap, PAS connector and torque sensor.
6 likely causes · 7 safe checks