Hisun Sector E (2021) Fault code 54C 3

[Billsectere]

Creeping down our steep driveway after a 3 mile hilly run. Using the engine to help break. I'm in 4WD and Low "gear" mode. Suddenly there is a "release" type pop and the engine is no longer breaking as sometimes happens over a certain speed. No problem I apply more breaks and come to a rest down the hill. BUT this time the "back up" alarm is beeping and now the engine is just dead. Error code was initially 54C 2 but after resting overnight it now says 54C 3. As soon as the key turns on I get the alarm and nothing from the motor. It does look like the flashing engine thing shows a square box in the middle front is flashing. I have tried to find those codes but no luck yet. I wouldnt know what to do with them anyway. Any insights appreciated.--Bill

 

[Hisun Sector E1 code 54C 3]

Hello, I have the same issue. I tried testing all the batteries and all says 6.0 volts. That code 54C 3 comes on soon as I turn the key. The company I bought this thing from is out of business. I have had this issue for about 8 months. Know one works on electric golf carts and Hisun said it might be a main board. Lol. I will never by a Hisun or electric golf cart again!

[Terry m]

Did anyone ever figure out what the 54C3 code meant and how to fix it? I have the same problem exactly as Bill described.

[Terry m]

in the hisun manual there is no 54c3 error code listed  any help is greatly appreciated   thx terry