EPASTS_a189 — Sbch Comm Err Mcu To Sbc
Full alert identifier: EPASTS_a189_sbchCommErrMcuToSbc
Alert description
This alert is reported by the SystemBasisChipHAL_A8140x (SBCH) component in case SBC communication check (MCU -> SBC) fails. Against random HW failures of the MCU and communication line including EMC.
Potential impact
EPAS reset. If reset more than 5 times then EPAS full loss of assist.
Set condition
SBC communication check (MCU -> SBC) fails (SE flag is set in WD feeding answer messages).
Clear condition
If the number of stored errors in non-initialized RAM variable representing MCU to SBC errors is less than the limit.
Signals to check
These diagnostic fields are associated with EPASTS_a189. Check the alert's Payload in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
Debug Info
EPASTS_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of EPASTS_a189.