Model Y

EPASTS_a061 — Am Int Serial Err

Full alert identifier: EPASTS_a061_amIntSerialErr

Alert description

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.

Potential impact

EPAS full loss of assist.

Set condition

EPAS ECU GDU device monitor detected failure (wrong parity bit on serial communication).

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_a061. Check the alert's Payload in Service Mode Plus for available values.

Signal	Unit
Debug Info `EPASTS_a061_debugInfo`	—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of EPASTS_a061.

EPASTS_a156 — Am Int Serial Err Safety Reset EPASTS_a156_amIntSerialErrSafetyReset This alert is reported when there is a GDU communication failure
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_a058 — Am Int Vgs Undervtg Err EPASTS_a058_amIntVgsUndervtgErr 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.
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