Remedies Center
Decode. Diagnose. Ride On.
Your eBike should empower you—not confuse you. That’s why we’ve created an easy-to-understand guide to all ESYNC system error codes, what they mean, and exactly how to fix or respond to them.
Whether it’s a minor sensor glitch or a battery communication issue, this page is your go-to resource for:
Understanding error codes displayed on your HMI or mobile app
Step-by-step remedies you can try yourself
Guidance on when to contact support or a certified dealer
Motor Controller Unit | ||
Error Code | Error Message | Remedies |
| E01 | Phase short Circuit Fault | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E02 | Under Voltage -Input Failure | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E03 | Over Voltage-Input Failure | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E04 | Over Current-Input Failure | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E05 | Controller Operating Temp. Failure | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E06 | Motor RPM Out of Range | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E07 | Hall Sensor failure ( Any out of 3 ) | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E08 | Pedal Assist Failure | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E09 | PAS output1 fault | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E10 | PAS output2 fault | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E11 | Head-lamp & rear lamp Failure | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E12 | Reserved for Sensor and Components – Error Status bits (HMI or IOT Module) | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E13 | Communication Error – HMI | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E14 | Motor Speed Signal Error | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E15 | MCU 12V Supply Signal Error for Head Lamp | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E16 | MCU 12V Supply Signal Error for Rear Lamp | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E17 | MCU 12V Supply Signal Error for HMI(Display) | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E18 | MCU 12V Supply Signal Error for other System available.(reserve) | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
BMS | ||
Error Code | Error Message | Remedies |
E19 | short circuit | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E20 | Over current discharge stage 1 | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E21 | Discharge overcurrent stage 2 (over current discharge stage 2) | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E22 | Over current charge | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E23 | overvoltage | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E24 | Under voltage | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E25 | over temperature discharge | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E26 | Under temperature discharge | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E27 | Over temperature charge | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E28 | Under temperature charge | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E29 | NTC1 is damaged (test ntc1 failure) | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E30 | NTC2 is damaged (test ntc2 failure) | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E31 | NTC3 is damaged (test ntc3 failure) | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E32 | NTC4 is damaged (test ntc4 failure) | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E33 | Charging MOSFET is damaged (test charge mosfet failure) | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E34 | Discharge MOSFET is damaged (test discharge mosfet failure) | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E35 | AFE damage (test afe failure) | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E36 | Test secondary over voltage failure | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E37 | CRC check failed (test crc failure) | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E38 | AFE parameter error (test afe paramater failure) | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E39 | RTC crystal oscillator is damaged (test rtc crystal failure) | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E40 | RTC configuration error (test rtc config failure) | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E41 | Test sampling wire failure | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |
| E42 | CAN communication error (test can communication failure) | Switch Off HMI, and turn it on after 30 secs, if the error still persists, kindly look for updates in your companion app |