EPASTS_a048_epmVcpVoltFail

This alert is reported by the ExternalPowerManager_A8140x (EPM) component in case of under voltage on the first charge pump.

 Live incidence rate

<0.01% (Extremely rare)

Vehicle messages

None displayed

Impact

EPAS full loss of assist.

Description

This alert is reported by the ExternalPowerManager_A8140x (EPM) component in case of under voltage on the first charge pump.

Cause

EPAS ECU EPM device voltage monitoring failed (undervoltage detected on first charge pump).

Clear condition

EPAS HW failure. EPAS power cycle N times and if persists, the gear needs to be changed.

Models

Model Y, Model Y 2025+

Visibility

service-fix

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