Controller Over Temperature
Sevcon controller temperature exceeds limit (typically >80°C)
What it means
Sevcon controller temperature exceeds limit (typically >80°C)
Warning — Monitor the situation, may self-resolve.
Likely causes
- Extended high-power riding
- Poor controller ventilation
- High ambient temperature
What to do
- 1Allow bike to cool with key off
- 2Check controller mounting and airflow
- 3Avoid sustained high-current draws in hot conditions
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 Thermal codes:
Dashboard codes for the same subsystem:
Questions
What does "Controller Over Temperature" mean in a Zero log?
Sevcon controller temperature exceeds limit (typically >80°C). It is written by the MBB. It is classed as warning: monitor the situation, may self-resolve.
What should I do about it?
Allow bike to cool with key off. Check controller mounting and airflow. Avoid sustained high-current draws in hot conditions.
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.