HVP family
HVP_w028_PackVoltMismatchFault
Vehicle may not restart
What does the HVP_w028_PackVoltMismatchFault alert mean?
Warns if the pack voltage doesn't match approximately with sum of brick voltages
What you'll see in your Tesla
- Vehicle may not restart
- Service is required
What triggers it
The pack voltage doesn't match approximately with sum of brick voltages
When it clears
The pack voltage match approximately with sum of brick voltages
Potential impact
The contactors may not be allowed to close
Affected models
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
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.