EPASTP family
EPASTP_a045_psumSbcBandgapVoltErr
Not Available
What does the EPASTP_a045_psumSbcBandgapVoltErr alert mean?
This alert is reported by the PowerSupplyManager_R12 (PSUM) when there is a SBC internal failure.
What you'll see in your Tesla
- Not Available
What triggers it
EPAS ECU SBC device internal voltage monitoring failure (VMON_bandgap out of tolerated limit) at startup.
When it clears
EPAS HW failure. EPAS power cycle N times and if persists, the gear needs to be changed.
Potential impact
EPAS full loss of assist.
Affected models
Model Y
Model Y 2025+
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