PCS2 family
PCS2_a041_hvBusBotUnderVoltage
Not Available
What does the PCS2_a041_hvBusBotUnderVoltage alert mean?
The sensor measuring the bottom half of the high voltage (HV) bus 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 bottom half of 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
Model 3 2017-2023
Model 3 2024+
Model Y
Model Y 2025+
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.