Segway Ninebot E2 Pro: error 42, motor not calibrated
Error 42 on the Segway E2 Pro means the motor isn't calibrated. Segway's self-test manual gives a calibration you can do with the brake lever and power button. If it doesn't take, contact Segway after-sales.
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Your Segway Ninebot E2 Pro shows 42 on the dashboard and beeps four long and two short. Segway's E2 Pro self-test manual, listed on its E2 Pro support page, says this alarm means the motor is not calibrated. The short answer: run Segway's calibration with the scooter switched off, then restart. If 42 stays, contact Segway after-sales.
Calibration uses only the brake lever and power button. Don't open the deck or the motor, and leave any further motor or controller work to Segway after-sales or a shop.
Most likely cause
The controller needs to know how the motor is set up before it can drive it smoothly. Segway's self-test manual says code 42 is caused by the motor not being calibrated, and gives a button sequence to calibrate it (Segway self-test manual). The beep pattern helps you read a code you missed: per the manual's examples, long beeps count the tens and short beeps count the ones.
Other causes to rule out
- A different motor code. Segway's manual lists 50 (motor abnormal, reseat the motor harness, then replace the motor) and 52 (motor can't rotate, test with a known good motor, then the controller). Read the exact number. (Segway self-test manual)
- Controller codes. Segway lists 11, 12, 13, 35, 40 and 45 as controller faults for after-sales service.
- Old firmware. Segway's E2 Pro product manual says the app shows code details and handles firmware updates.
How to confirm
- Read the number on the dashboard and count the beeps. Four long and two short is 42.
- Open the Segway app, which shows error details according to the product manual.
- Update the firmware in the app if one is offered.
- Run the calibration below.
- Restart and see whether 42 is gone.
Fix options
Run Segway's motor calibration (easy)
From the self-test manual:
- Shut the scooter down.
- Hold the brake lever.
- Press and hold the power button. Segway says to long press for 15 seconds, and notes the first long press is 5 seconds. Keep the scooter and motor still while you hold.
- Three beeps mean calibration worked.
- Restart the scooter and check its status.
Contact Segway after-sales (pro)
If three beeps don't come or 42 returns, Segway's manual says to contact after-sales. The fix may involve the motor or controller, which a service center should test.
Parts
- None for the calibration
- Hub motor or E-bike controller, only if Segway after-sales finds a fault
Videos
When to get a pro
Get help if calibration fails, if 42 keeps returning, or if another motor or controller code appears. See Segway Ninebot scooter troubleshooting, e-scooter maintenance and when to call a pro.
Sources
- E2 Pro self-test manual, support.segway.com
- E2 Pro support page, support.segway.com
- E2 Pro product manual, store.segway.com
- How to Check Error Codes Meanings on Segway Ninebot eKickscooter E2 Pro, youtube.com
Stuck after these checks? Find a shop near you.
If these steps didn't fix it, find a shop near you in our partner network. For battery or wiring trouble, look for shops marked Battery and electrical.
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