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YVY eBike Controller
$79.00 $89.00Price range: $79.00 through $89.00
YVY K20 eBike Controller
Item: YVY K20 Electric Bike Controller Replacement
- Voltage : 48V | Current : 28A ± 1A
- Compatible: 20-Inch K20 Q20 Lite | Ridstar Q20 Pro
- YVY K20 Top Speed: 25-32 mph
Not sure which version you need? Send us your YVY Ebike controller version label and we’ll match it for you.
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YVY K20 eBike Controller
If your YVY K20 turns on but the motor does not respond, shows controller-related error codes, loses throttle power, or suddenly stops working, the motor controller is one of the most common causes. Replacing the controller can restore smooth acceleration, proper motor communication, and reliable riding performance.
This YVY controller is also compatible with select Ridstar Q20 models that use the same 48V controller system and connector configuration.
YVY K20 Electric Bike
- 48V Battery System
- 1000W / 1500W Brushless Rear Hub Motor
- 20×4.0 Fat Tire eBike
- Factory-style OEM replacement controller
Compatible Models:
- YVY K20 Lite (1000W Motor | 48V15.6A Battery | Version Label: 3012 or XQS-Q20Mini)
- YVY K20 (1500W Motor | 48V 20Ah Battery | Version Label: 5052)
- Confirm version serial number on label before ordering
48V 1000W YVY Fat Tire eBike
The YVY K20 controller is designed to handle the current requirements of a 48V 1000W or 1500W motor, providing consistent power delivery for:
- Daily commuting
- Off-road riding
- Fat tire trail riding
- Hills and uneven terrain
The YVY K20 controller manages power output from the battery while receiving signals from the throttle, PAS sensor, brake cutoff sensors, and display system.
YVY K20 Controller Specifications
| Specification | Details |
|---|---|
| Product Type | Electric Bike Motor Controller |
| Compatible Model | YVY K20, Ridstar Q20 Lite, Ridstar Q20 1500W Controller |
| Voltage | 48V |
| Motor Power | 1000W / 1500W |
| Motor Type | Brushless Hub Motor |
| Application | Fat Tire Electric Bike |
| Tire Size Compatibility | 20×4.0 Fat Tire eBike |
| Housing Material | Aluminum Alloy |
| Installation | Direct Replacement |
YVY K20 Controller Wiring Diagram
A failed controller may cause these common symptoms:
1. Display Turns On But Motor Does Not Move
Possible signs:
- LCD works normally
- Battery shows full power
- Throttle has no response
- PAS does not activate the motor
Common cause: Internal MOSFET failure | Controller circuit damage
2. Controller Error Codes Appear
Depending on the display model, controller-related problems may show error messages such as:
Error 06 / Error 07
Controller or motor system failure. Possible causes: Controller output failure | Motor communication problem
Error 08
Throttle signal problem. Possible causes: Controller cannot provide correct throttle voltage | Controller internal failure
Error 21
Communication error. Possible causes: Display-controller communication issue | Damaged controller communication circuit
Burned or Melted Controller Connectors?
If your YVY K20 controller has:
- Melted plugs
- Burn marks
- Damaged wires
- Loose terminals
inspect the entire wiring system before installing a new controller.
A damaged connector can create electrical resistance, causing excessive heat that may damage:
- Controller plugs
- Motor cables
- Battery connectors
Replacing only the controller without repairing damaged connectors may cause another failure.
Get Your YVY K20 Back on the Road
A failed controller can stop your entire electric bike from working. This YVY K20 1000W Controller Replacement restores reliable motor control, smooth acceleration, and proper communication between your e-bike components.
Keep your YVY K20 20×4 fat tire electric bike running with a controller built for its original 48V system.
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