Model Y

EPASTS_a260 — Sco Private Bus Off

Full alert identifier: EPASTS_a260_scoPrivateBusOff

Alert description

This alert is reported by the SystemConditionObserver_T222 (SCO) component when the private bus-off state is detected. Inter MCU Communication (IMC) problem.

Potential impact

EPAS master/silent decision.

Set condition

EPAS Inter MCU Communication health status is faulty.

Clear condition

IMC health status is IMC_NORMAL or IMC_ONLY_RX.

Signals to check

These diagnostic fields are associated with EPASTS_a260. Check the alert's Payload in Service Mode Plus for available values.

Signal	Unit
Debug Info `EPASTS_a260_debugInfo`	—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of EPASTS_a260.

EPASTS_a259 — Sco Can Bus Off EPASTS_a259_scoCanBusOff This alert is reported by the SystemConditionObserver_T222 (SCO) component when the a bus-off state is detected
EPASTS_a104 — Exha Bus Mpu Exception EPASTS_a104_exhaBusMpuException This alert is reported by the ExceptionHandler_TC3x (EXHA) component when there is a bus level MPU violation
EPASTS_a151 — Am Permanent Emergency Off Requested EPASTS_a151_amPermanentEmergencyOffRequested This alert is reported by the ActuatorManager_R12 component when there is a current measurement failure.
EPASTS_a149 — Am Reversible Emergency Off Requested EPASTS_a149_amReversibleEmergencyOffRequested This alert is reported by the ActuatorManager_R12 (AM) component when the external operating condition change.
EPASTS_a150 — Am External Emergency Off Requested EPASTS_a150_amExternalEmergencyOffRequested This alert is reported by the ActuatorManager_R12 (AM) component when the external operating condition change.

Browse all EPASTS alert codes