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Warning· MBB / BMS log file

Limp Mode

Bike is operating in reduced-power safety mode

SystemSource: MBBLog file condition
Last updated: July 30, 2026

What it means

Bike is operating in reduced-power safety mode

WarningMonitor the situation, may self-resolve.

Likely causes

  • Active fault requiring attention
  • Thermal limiting active
  • Low battery voltage

What to do

  1. 1Check for other error codes
  2. 2Allow cooling if thermal
  3. 3Charge battery if low SOC

Which bikes use this table

Recorded in the binary log rather than shown on the dash — every generation writes them.

Questions

What does "Limp Mode" mean in a Zero log?

Bike is operating in reduced-power safety mode. It is written by the MBB. It is classed as warning: monitor the situation, may self-resolve.

What should I do about it?

Check for other error codes. Allow cooling if thermal. Charge battery if low SOC.

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.

Upload a log

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.