PCS2REXB family
PCS2REXB_a045_hvBattTopUnderVoltage
Not Available
What does the PCS2REXB_a045_hvBattTopUnderVoltage alert mean?
The sensor measuring the top half of the high voltage (HV) battery voltage detects a value below the allowed voltage threshold
What you'll see in your Tesla
- Not Available
What triggers it
The sensor measuring the top half of the HV battery 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
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.