Model Y

EPASTS_a058 — Am Int Vgs Undervtg Err

Full alert identifier: EPASTS_a058_amIntVgsUndervtgErr

Alert description

This alert is reported by the ActuatorManager_R12 (AM) component when there is a GDU failure. GDU monitors gate-to-source voltage, sets a flag and the software checks it.

Potential impact

EPAS full loss of assist.

Set condition

EPAS ECU GDU device monitor detected failure (gate-to-source voltage).

Clear condition

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

Signals to check

These diagnostic fields are associated with EPASTS_a058. Check the alert's Payload in Service Mode Plus for available values.

Signal	Unit
Debug Info `EPASTS_a058_debugInfo`	—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of EPASTS_a058.

EPASTS_a061 — Am Int Serial Err EPASTS_a061_amIntSerialErr This alert is reported by the ActuatorManager_R12 (AM) component when there is a GDU failure. This diagnostic checks the parity of the messages sent by the GDU.
EPASTS_a063 — Am Int Regulator Err EPASTS_a063_amIntRegulatorErr This alert is reported by the ActuatorManager_R12 (AM) component when there is a GDU failure. GDU internal rail overvoltage check. The GDU contains a set of internal voltage rails and their voltage monitors. The GDU reacts, software just l…
EPASTS_a156 — Am Int Serial Err Safety Reset EPASTS_a156_amIntSerialErrSafetyReset This alert is reported when there is a GDU communication failure
EPASTS_a102 — Am Phasecurrent Qos Err EPASTS_a102_amPhasecurrentQosErr This alert is reported by the ActuatorManager_R12 (AM) component when there is a current measurement failure.
EPASTS_a066 — Am Volt Qf Err EPASTS_a066_amVoltQfErr This alert is reported by the ActuatorManager_R12 (AM) component when if voltage measurement comparison failed, HW failure.

Browse all EPASTS alert codes