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Warning· MBB / BMS log file

Power Limited

Controller has reduced available power due to thermal derating

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

What it means

Controller has reduced available power due to thermal derating

WarningMonitor the situation, may self-resolve.

Likely causes

  • Motor over temperature
  • Controller over temperature
  • Battery over temperature

What to do

  1. 1Reduce power demand and allow cooling
  2. 2Check cooling system airflow
  3. 3Normal protection behavior

Which bikes use this table

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

Questions

What does "Power Limited" mean in a Zero log?

Controller has reduced available power due to thermal derating. It is written by the MBB. It is classed as warning: monitor the situation, may self-resolve.

What should I do about it?

Reduce power demand and allow cooling. Check cooling system airflow. Normal protection behavior.

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.