BMSSEMI family
BMSSEMI_a052_BusVoltageTooLow
Battery system voltage error detected
What does the BMSSEMI_a052_BusVoltageTooLow alert mean?
High Voltage (HV) system bus voltage is too low.
What you'll see in your Tesla
- Battery system voltage error detected
- PULL OVER SAFELY
What triggers it
BMS_packVoltage is less than (BMS_minBusVoltage - VOLTAGE_LIMIT_EXCEEDED_MARGIN) for BUS_VOLTAGE_LIMIT_EXCEEDED_QUALIFICATION_TIME.
When it clears
BMS_packVoltage is greater than BMS_minBusVoltage.
Potential impact
No functional impact on vehicle operation.
Affected models
Semitruck
Track your Tesla's alerts automatically
Alerts like this reach MyTeslaMate through your car's Tesla telemetry API. MyTeslaMate logs every alert your Tesla reports and turns it into readable history and real-time notifications — hosted TeslaMate with no server to run.