Skip to content

VCSEC_a505 — CAN Msg MAC Verification Key Mismatch

Full alert identifier: VCSEC_a505_CANMsgMACVerificationKeyMismatch

Alert description

Excessive Controller Area Network (CAN) Message Authentication Code (MAC) verification mismatches detected, indicating a possible key mismatch with the transmitter.

Potential impact

Authenticated CAN messages may not be received due to a key mismatch.

Set condition

The number of MAC verification mismatches exceeds the threshold within the timeout window.

Clear condition

The alert clears after CAN broadcast verification keys are reprovisioned using the Reprovision CAN Authentication Keys ODIN routine and all ECUs are successfully re-paired.

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCSEC_a505.

Browse all VCSEC alert codes