U0028

CD87 - U0028

Information saved in
DDE

Fault code
CD87 - U0028

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

Fault description
Trouble with communications to PT CAN bus, signal
reception is no longer present. Control module has
deactivated itself from the PT 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.
Check wires and plug-in conections for short circuits and
opens.

Fault effect and breakdown warning
-

Driver information
Warning light:
MIL

Service instruction
none