PCS2REXA family
PCS2REXA_a037_hvBusUnderVoltage
Not Available
What does the PCS2REXA_a037_hvBusUnderVoltage alert mean?
The high voltage (HV) bus goes below the allowed voltage threshold
What you'll see in your Tesla
- Not Available
What triggers it
The HV bus voltage goes below the allowed voltage threshold
When it clears
The DCDC system retries
Potential impact
DCDC functionality may be limited or paused
Affected models
Cybertruck
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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.