APSB_w020 — ECU checkstop Error

Full alert identifier: APSB_w020_ECU_checkstopError

Alert description

Autopilot Processor Secondary (APS) receives CPU instruction execution error.

Potential impact

Autopilot features will be unavailable.

Set condition

APS receives a CPU exception.

Clear condition

Clears on reset / sleep cycle.

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of APSB_w020.

APSB_w191 — Timesync Error APSB_w191_timesyncError Autopilot Processor Secondary (APS) detected clock synchronization errors with the Autopilot Processor Primary (APP) and/or the Autopilot Processor Backup (APB).
APSB_w282 — Smmu Error APSB_w282_smmuError The System Memory Management Unit (SMMU) on the Autopilot electronic control unit (ECU) has encountered errors.
APSB_w291 — Eplanner Error APSB_w291_eplannerError The Eplanner on Autopilot electronic control unit (ECU) has encountered errors.
APSB_w019 — ECU Stack Overflow APSB_w019_ECU_Stack_Overflow Autopilot Processor Secondary (APS) detects software task stack overflow.
APSB_w133 — ETH Switch Error APSB_w133_ETHSwitchError Autopilot Processor Secondary (APS) has not initialized the Ethernet switch correctly.

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