EPASTP_a189_sbchCommErrMcuToSbc
Not Available
What does the EPASTP_a189_sbchCommErrMcuToSbc alert mean?
This alert is reported by the SystemBasisChipHAL_A8140x (SBCH) component in case SBC communication check (MCU -> SBC) fails. Against random HW failures of the MCU and communication line including EMC.
What you'll see in your Tesla
- Not Available
What triggers it
SBC communication check (MCU -> SBC) fails (SE flag is set in WD feeding answer messages).
When it clears
If the number of stored errors in non-initialized RAM variable representing MCU to SBC errors is less than the limit.
Potential impact
EPAS reset. If reset more than 5 times then EPAS full loss of assist.
Affected models
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