Zero error code 41
Motor High Temperature
What it means
Motor High Temperature
Motor temperature high. The bike reduces power to protect the motor.
Warning — Monitor the situation, may self-resolve.
What to do
- 1Ease off and let the motor cool. Repeated derating at moderate load is worth a dealer check.
Code 41 on the other dash
The number alone is not enough. A Gen3 dash reads code 41 as Motor High Temperature; a Gen2 dash reads the same number as Low Battery Voltage Disable. And the model name does not settle it: the S, SR, DS and DSR kept their names when they moved from the Sevcon dash to Cypher III in 2024, so it is the year that tells you which table applies.
Which bikes use this table
Cypher III dash: SR/F and SR/S (2020+), DSR/X (2023+), S/F, and the S, SR, DS and DSR from 2024, when those four moved to the FST platform.
Related codes
Other Gen3 Thermal codes:
What the log file records for the same subsystem:
Questions
What does error code 41 mean on a Zero Gen3 dash?
Motor High Temperature. Motor temperature high. The bike reduces power to protect the motor. It is classed as warning: monitor the situation, may self-resolve.
What should I do about it?
Ease off and let the motor cool. Repeated derating at moderate load is worth a dealer check.
Does code 41 mean the same thing on a Gen2 Zero?
No. On a Gen2 dash, code 41 is "Low Battery Voltage Disable" — a different fault entirely. The two tables share numbers but not meanings, so read the one that matches your dash, not your model name: the S, SR, DS and DSR kept their names when they moved to Cypher III in 2024.
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:
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.