12V Battery Low
Auxiliary 12V battery voltage is low
What it means
Auxiliary 12V battery voltage is low
Warning — Monitor the situation, may self-resolve.
Likely causes
- 12V battery aging
- Parasitic drain from accessories
- DC-DC converter issue
What to do
- 1Check 12V battery terminals
- 2Charge or replace 12V battery
- 3Check for accessories left on
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 "12V Battery Low" mean in a Zero log?
Auxiliary 12V battery voltage is low. It is written by the MBB. It is classed as warning: monitor the situation, may self-resolve.
What should I do about it?
Check 12V battery terminals. Charge or replace 12V battery. Check for accessories left on.
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.