EPASTS family
EPASTS_a256_dcvmOverVolt
Not Available
What does the EPASTS_a256_dcvmOverVolt alert mean?
This alert is reported by the DCVoltageMonitor_T222 (DCVM) component when overVoltage is detected.
What you'll see in your Tesla
- Not Available
What triggers it
EPAS has detected supply overvoltage (higher than 18v [calibratable]).
When it clears
Perform EPAS ECU power cycle
Potential impact
Assist is disabled.
Affected models
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.