Accelerator fault
When accelerator is in neutral position, the voltage is abnormal (below 2.3V o higher than 2.7V). It needs to be replaced.
Please check video for instructions on "Replace Accelerator".
Tools: Allen wrench
1. Photo of truck name plate;
2. Video (SRO ERR and overall appearance of the handle);
3. Video of measuring handle accelerator voltage with a multimeter