Controller Fault
General Sevcon controller fault detected
What it means
General Sevcon controller fault detected
Error — Issue detected, may affect performance.
Likely causes
- Controller hardware failure
- Firmware corruption
- Power supply issue
What to do
- 1Power cycle the bike (turn off, wait 30 seconds, turn on)
- 2Check 12V battery voltage
- 3If persistent, dealer inspection required
Which bikes use this table
Recorded in the binary log rather than shown on the dash — every generation writes them.
Related codes
Dashboard codes for the same subsystem:
Questions
What does "Controller Fault" mean in a Zero log?
General Sevcon controller fault detected. It is written by the MBB. It is classed as error: issue detected, may affect performance.
What should I do about it?
Power cycle the bike (turn off, wait 30 seconds, turn on). Check 12V battery voltage. If persistent, dealer inspection required.
See when this actually happened on your bike
A dash code tells you the fault; the log tells you the pack temperature, the state of charge and the ten minutes leading up to it.
Sources:
Community reference: ZeroManual wiki entry
The code and its name are transcribed from Zero's own owner manuals; the severity, category and troubleshooting notes are ours. For official diagnostics, consult an authorized Zero Motorcycles dealer.