Model Y

EPASTP_a116 — Mrcc Startup Reg Cs Error Static Err

Full alert identifier: EPASTP_a116_mrccStartupRegCsErrorStaticErr

Alert description

This alert is reported when the Start-up register check failed: MCU internal error OR SW systematic failure

Potential impact

EPAS reset. If reset more than 6 then EPAS fallback to bootloader.

Set condition

EPAS microcontroller's different registers does not contain the right values before starting the safety functions (CRC doesn't match for the second test fail).

Clear condition

Perform EPAS Software update. Replace HW if the alert persists.

Signals to check

These diagnostic fields are associated with EPASTP_a116. Check the alert's Payload in Service Mode Plus for available values.

Signal	Unit
Debug Info `EPASTP_a116_debugInfo`	—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of EPASTP_a116.

EPASTP_a117 — Mrcc Startup Reg Cs Error Transient Err EPASTP_a117_mrccStartupRegCsErrorTransientErr This alert is reported when there is a transient CRC failure in register CRC check.
EPASTP_a130 — Mrcc Config Cs Error Err EPASTP_a130_mrccConfigCsErrorErr This alert is reported when there is a CRC failure in the periodic register CRC checking. MCU internal error OR SW systematic failure
EPASTP_a118 — Mcussc Flash Cs Error Err EPASTP_a118_mcusscFlashCsErrorErr This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when the flashed SW is incorrect or flash memory failure. Calculated CRC not matching stored CRC.
EPASTP_a026 — Mrcc Cs Error Check Fail EPASTP_a026_mrccCsErrorCheckFail This alert is reported when CRC check failed, consistency of non-inited memory sections did not keep during the restart.
EPASTP_a038 — Csoh Ch1 Cs Error Err At Reset EPASTP_a038_csohCh1CsErrorErrAtReset This alert is reported when CRC check failed, value of per-instance memory is other than the pattern or the actual per-instance memory value not equal to the saved per-instance memory value.

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