SSFA_a054 — APP MIA

Full alert identifier: SSFA_a054_APP_MIA

Alert description

One or more of the expected controller area network (CAN) messages from the Autopilot Primary (APP) were not received.

Potential impact

Autopilot does not operate as expected.

Set condition

A message the local ECU expects to receive from the APP ECU is not received within the expected timeout, or the drop rate is too high while the APP is CAN active.

Clear condition

All messages the local electronic control unit (ECU) expects to receive from the APP ECU are being received or the APP ECU is CAN inactive.

Signals to check

These diagnostic fields are associated with SSFA_a054. Check the alert's Alert Log in Service Mode Plus for available values.

Signal	Unit
RC Inertial 1 `SSFA_a054_RC_inertial1`	—
RC Inertial 2 `SSFA_a054_RC_inertial2`	—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of SSFA_a054.

SSFA_a090 — APS MIA SSFA_a090_APS_MIA One or more of the expected CAN messages from APS were not received.
SSFA_a114 — ESP MIA SSFA_a114_ESP_MIA One or more expected Controller Area Network (CAN) messages from the Electronic Stability Program (ESP) electronic control unit (ECU) was not received. Stability and traction control functions may be unavailable, or their performance may b…
SSFA_a071 — SEPS MIA SSFA_a071_SEPS_MIA One or more of the messages the vehicle controller receives periodically from the Secondary Electric Power Steering (SEPS) electronic control unit (ECU) is not received, indicating the SEPS ECU may be unavailable (MIA).
SSFA_a072 — PEPS MIA SSFA_a072_PEPS_MIA One or more of the messages the vehicle controller receives periodically from the Primary Electric Power Steering (PEPS) electronic control unit (ECU) is not received, indicating the PEPS ECU may be unavailable (MIA).
SSFA_a111 — EPBR MIA SSFA_a111_EPBR_MIA One or more of the messages the vehicle controller receives periodically from the right Electronic Park Brake (EPBR) electronic control unit (ECU) is not received, indicating the EPBR ECU may be unavailable (MIA).

Browse all SSFA alert codes