EPASTS_a159_exchFlashWordlineTransientErr

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.

Live incidence rate

<0.01% (Extremely rare)

Vehicle messages

None displayed

Impact

EPAS full loss of assist.

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.

Cause

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.

Models

Model Y, Model Y 2025+

Visibility

service-fix

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