EPASTP_a183 — Sbch Comm Err Sbc To Mcu
Full alert identifier: EPASTP_a183_sbchCommErrSbcToMcu
Alert description
This alert is reported by the SystemBasisChipHAL_A8140x (SBCH) component SBC if the communication check (SBC -> MCU) 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
EPAS SBC diagnostics detected SPI failures. Communication check (SBC -> MCU) fails (Wrong ID or CRC failure).
Clear condition
EPAS will perform a power cycle. If persist then perform EPAS Software update. Replace HW if the alert persist.
Signals to check
These diagnostic fields are associated with EPASTP_a183. Check the alert's Payload in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
Debug Info
EPASTP_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of EPASTP_a183.