EPASTP family
EPASTP_a012_mcusscMbistEccErr
Not Available
What does the EPASTP_a012_mcusscMbistEccErr alert mean?
This alert is reported by the MCUSafetyStartupChecks_TC3x (MCUSSC) component when there is a MCU internal failure. (Memory Built-In-SelfTest failed).
What you'll see in your Tesla
- Not Available
What triggers it
EPAS microcontroller memory (M)BIST failed at startup.
When it clears
Perform EPAS ECU power cycle.
Potential impact
EPAS full loss of assist.
Affected models
Model Y
Model Y 2025+
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