Precharge Failed
High-voltage system precharge sequence failed
What it means
High-voltage system precharge sequence failed
Error — Issue detected, may affect performance.
Likely causes
- Contactor fault
- Capacitor issue
- HV wiring problem
What to do
- 1Power cycle the bike
- 2If persistent, do not ride
- 3Dealer inspection required
Which bikes use this table
Recorded in the binary log rather than shown on the dash — every generation writes them.
Related codes
Other log file System codes:
Dashboard codes for the same subsystem:
Questions
What does "Precharge Failed" mean in a Zero log?
High-voltage system precharge sequence failed. 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. If persistent, do not ride. 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.