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Author: CSC Motorcycles via YouTube
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Fix Your RX1E or ES5 Running in Reverse | City Slicker Controller 9‑Flash Error | Magnetic Encoder Self‑Learning Procedure
If your CSC RX1E, CSC ES5, or Zongshen City Slicker suddenly starts running backwards, won’t go into READY mode, or your controller is flashing 9 times, this video shows the exact procedure to fix it.
This issue happens when the controller loses or never learned the motor magnetic encoder angle. When that happens, the bike may:
Run in reverse
Stutter or vibrate
Fail to enter READY
Throw 9 flashes on the controller
Show encoder/Hall/angle‑related fault codes
In this video, I walk through the hidden self‑learning procedure used by many Chinese 96V sine‑wave controllers. This method works on the RX1E, ES5, and other similar electric motorcycles using the same controller platform.
🔧 What This Video Fixes
This procedure corrects:
Motor spinning backwards after controller replacement
9‑flash controller error (City Slicker / RX1E / ES5)
Incorrect or missing magnetic encoder angle
Hall/encoder mismatch
Controller not recognizing motor position
Rough startup or no torque
READY light not engaging due to encoder faults
If you installed a new controller, swapped wiring, or the bike suddenly started running in reverse, this is the fix.
🛠️ Self‑Learning Procedure (Explained in the Video)
The video demonstrates the exact steps:
Fully open the throttle
Hold the brake
Turn the ignition ON
Within 5 seconds: release throttle + brake
Fully open throttle again
Press the brake 3 times
Keep throttle fully open and wait for the motor to spin automatically
After it stops, turn the bike OFF and restart
This teaches the controller the correct magnetic encoder angle, fixes direction, and clears the 9‑flash error.
⚠️ Important Notes
Make sure the rear wheel is off the ground — the motor will spin on its own
Do NOT snap the throttle; open it smoothly
If the motor does NOT spin during the procedure, the sequence didn’t activate
Works on RX1E, ES5, and City Slicker controllers using the same encoder‑based PMSM motor
🔍 Keywords to Help Others Find This Video
RX1E reverse fix, RX1E motor backwards, RX1E controller error, RX1E 9 flashes, ES5 reverse direction, ES5 controller problem, City Slicker 9 flash code, City Slicker encoder error, electric motorcycle reverse fix, magnetic encoder self‑learning, motor angle calibration, CSC RX1E troubleshooting, CSC ES5 troubleshooting, electric motorcycle controller programming, PMSM encoder learn mode.