EPASTP family
EPASTP_a021_osehCsErrorCheck
Not Available
What does the EPASTP_a021_osehCsErrorCheck alert mean?
This alert is reported by OsErrorHandler_R12 (OSEH) component when the ResetReason_OsError structure CRC check is failed.
What you'll see in your Tesla
- Not Available
What triggers it
EPAS uC internal memory (OS reset management storage) failure (CRC) at startup.
When it clears
Perform EPAS Software update.
Potential impact
EPAS full loss of assist.
Affected models
Model Y
Model Y 2025+
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