The Complete Guide to Yolin E-Bike Display Settings (P-Parameters Explained)
BlackJackModern e-bike displays do much more than show speed or battery level. They also allow technicians and riders to configure important system parameters such as wheel size, speed limits, pedal assist behavior, and controller communication settings.
Many Yolin LCD displays — including models such as the YL-80C, YL-81F, and YL-91F series — use a structured configuration system often referred to as P-parameters. These parameters allow the display to adapt to different motors, battery voltages, and sensor configurations used by various bike manufacturers.
If you are looking for compatible replacement displays, you can browse the full lineup in our Yolin e-bike display collection.
How to Enter the Yolin Display Settings Menu
Most Yolin displays use a similar button combination to access configuration settings.
- Turn on the e-bike display.
- Press and hold the “+” and “–” buttons simultaneously for several seconds.
- The screen will enter the parameter menu.
- Use the Power (or “i”) button to switch between parameters.
- Use the + / – buttons to adjust values.
- Hold the power button again to exit.
Button combinations may vary slightly depending on the display model or bike manufacturer configuration.
Important Compatibility Note
Although many Yolin displays share similar parameter structures, some bike manufacturers customize these settings for their specific systems.
OEM customization may include:
- Renaming parameter labels
- Changing the order of configuration settings
- Locking certain parameters
- Replacing parameters with password entry screens
Because of this, the parameters described in this guide represent the standard configuration used across many Yolin display systems. Your particular e-bike model may implement variations.
Common Yolin Display Parameters Explained
P1 – Speed Unit Selection
Controls whether speed is displayed in kilometers per hour or miles per hour.
- 00 = km/h
- 01 = mph
Riders in the United States typically select mph, while European systems use km/h.
P2 – Battery Voltage Setting
Defines the battery voltage used by the system so the display can calculate battery level correctly.
Common configurations include 36V, 48V, and 52V battery systems.
P3 – PAS Assist Levels
Controls how many pedal assist levels are available.
Typical options include:
- 0-3 assist levels
- 1-3 assist levels
- 0-5 assist levels
- 1-5 assist levels
- 0-9 assist levels
P3.1 – PAS Level Ratio (Assist Power Distribution)
Defines how much motor power is delivered at each assist level. Each PAS level can have a different percentage of total motor output. For example:
- Level 1 = 50% power
- Level 2 = 70% power
- Level 3 = 90% power
This allows riders to fine-tune how strong each assist level feels.
P4 – Wheel Diameter
This parameter sets the wheel size used to calculate speed and distance.
Common values include 20", 24", 26", 27.5", and 29".
P5 – Speed Sensor Magnet Count
Defines how many magnets the speed sensor detects per wheel rotation.
Typical settings include 1, 6, or 12 magnets depending on the sensor design.
P6 – Speed Limit
Sets the maximum assisted speed of the system. However, final speed limits may also be restricted by controller firmware or local regulations.
P7 – Start Mode
Determines whether the throttle works from a complete stop or only after the bike begins moving.
- Zero start
- Non-zero start
P8 – Drive Mode
Defines how motor assistance can be activated:
- Pedal assist only
- Throttle only
- PAS + throttle combined
P9 – Pedal Assist Sensitivity
Adjusts how quickly the motor responds when the rider begins pedaling. Higher sensitivity is ideal for responsive riding, while lower sensitivity provides smoother power delivery.
PA – Start Strength
Controls how strong the motor assistance is when pedal assist first activates.
Pb – PAS Sensor Magnet Number
Defines the number of magnets in the cadence sensor.
More magnets: Smoother and more precise pedal detection
Fewer magnets: Simpler but less responsive system
P8.1 – PAS Sensor Direction
Determines the rotation direction of the pedal assist sensor.
- run-F = Forward rotation
- run-b = Reverse rotation
This must match the physical installation of the sensor. If set incorrectly, the motor may not respond properly when pedaling.
PC – Controller Current Limit
Limits the maximum current the controller can draw from the battery.
Higher values:
- More power and acceleration
- Increased battery consumption
Lower values:
- Improved efficiency
- Reduced motor stress
Pd – Low Voltage Protection
Defines the minimum battery voltage before the system shuts down to protect the battery from deep discharge.
P9.1 – Throttle Walk Assist Mode (HL)
Controls whether the throttle is limited to walk-assist speed.
- HL-Y = Throttle limited to 6 km/h (walk mode)
- HL-N = Full throttle speed available
P9.2 – Throttle Level Control (HF)
Defines whether throttle speed is linked to assist levels.
- HF-Y = Throttle speed follows PAS level limits
- HF-N = Throttle can reach maximum speed regardless of PAS level
PE – Display Password Protection
Some Yolin displays support password protection to prevent unauthorized access to advanced settings.
PF – Auto Sleep Timer
Controls how long the display remains active before automatically turning off.
dEF – Factory Reset
Restores all display settings to factory defaults.
- dEF-Y = Reset all parameters
- dEF-N = Cancel
Trip Reset Function
Allows the rider to manually reset trip distance (Trip Odometer).
- Total mileage (odometer) cannot be reset
- Trip distance must be reset manually
Walk Assist Mode (Non-Parameter Feature)
Enables the bike to move at a constant low speed (typically 6 km/h) without pedaling.
Can’t Change Your E-Bike Display Settings?
If certain parameters are locked or missing, this is usually due to display limitations rather than the controller.
Upgrading to a compatible display can unlock features such as:
- Bluetooth connectivity
- Full parameter access
- Advanced customization options
Why Some Displays Require a Password
Some e-bike manufacturers lock display settings using a password to prevent accidental system configuration changes.
In these cases, parameters such as P-, PE, P0, P5, P8, P10 or P19 (sometimes displayed as 0P, 5P, 8P, 10P or 19P) may appear as password entry screens instead of editable configuration settings.
If you encounter a locked display menu, refer to our guide:
How to Recover a Yolin Display Password
Where to Download Yolin Display Manuals
If you want to confirm the exact configuration used by your display model, you can download official documentation here:
These manuals include wiring diagrams, button instructions, and model-specific parameter explanations.
Need Additional Support?
For troubleshooting guides, error code explanations, and technical resources, visit our E-Bike Display Support Center.
Our support articles help riders, technicians, and e-bike builders diagnose common display issues and configuration questions.
Conclusion
Yolin e-bike displays provide a flexible configuration system that allows manufacturers to adapt the same hardware to many different e-bike platforms.
Understanding how display parameters work helps riders troubleshoot issues, optimize performance, and ensure their system communicates correctly with the controller.
Always verify compatibility with your bike manufacturer before modifying advanced settings.