Model Y

EPASTP_a159 — Exch Flash Wordline Transient Err

Full alert identifier: EPASTP_a159_exchFlashWordlineTransientErr

Alert description

This alert is reported by the ExceptionHandler_TC3x (EXCH) component when there is a double bit ECC error in the active pflash and additional ECC errors were found in the same wordline

Potential impact

EPAS full loss of assist.

Set condition

EPAS application component ExceptionHandler detected unrecoverable memory failure (other page PFlash ECC fault).

Clear condition

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

Signals to check

These diagnostic fields are associated with EPASTP_a159. Check the alert's Payload in Service Mode Plus for available values.

Signal	Unit
Debug Info `EPASTP_a159_debugInfo`	—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of EPASTP_a159.

EPASTP_a175 — Exch Flash Stored Config Err EPASTP_a175_exchFlashStoredConfigErr This alert is reported when ALM7[31] Flash Stored Configuration Error alarm
EPASTP_a087 — Rsth Flash Config Err EPASTP_a087_rsthFlashConfigErr This alert is reported by the HwResetHandler_TC3x (RSTH) component if the flash memory configuration register error.
EPASTP_a152 — Exch Flash Ecc Exception EPASTP_a152_exchFlashEccException This alert is reported by the ExceptionHandler_TC3x (EXCH) component when there is a single-bit or multi-bit (all 1 and all 0) error in the pflash. This diagnostic is the handling of the exception thrown by the PFlash ECC when it encounter…
EPASTP_a124 — Mcussc Mbist Ecc Transient Err EPASTP_a124_mcusscMbistEccTransientErr This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when the memory Built-In-SelfTest failed, MCU failure.
EPASTP_a120 — Mcussc Flash Ecc Latent Err EPASTP_a120_mcusscFlashEccLatentErr This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when the flashed SW is incorrect or flash memory failure.

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