49F1

49F1 - U029D

Information saved in
DDE

Fault code
49F1 - U029D

Fault text
DDE: CAN bus D: Control unit has deactivated itself from
the bus (bus off)

Fault description
Communications to the CAN bus are impaired and no
additional signals are received. The ECU has disconnected
itself from the CAN bus (bus off).

Condition for fault identification
Test condition:
Continuous, corresponding to the configured time grid.
Voltage condition:
Continuous, corresponding to the configured time grid.

Condition for fault memory entry
Debounce (400 ms)

Action in service
Conduct CAN system analysis.

Fault effect and breakdown warning
-

Driver information
Warning light:
MIL

Service instruction
none