U1129

CDA7 - U1129

Information saved in
DME

Fault code
CDA7 - U1129

Fault text
Message (status, reverse gear, 3B0)

Fault description
Lost Communication With Reverse Status

Condition for fault identification
Test condition:
'Reverse gear status' recognized at least once
Terminal condition: Terminal 15 ON
Voltage condition:
Voltage in onboard electrical system > 10 V

Condition for fault memory entry
40 sec.

Action in service
1) With manual transmission: Check CAN link between
light module and DME.
2) With automatic/SMG: Check code entry in light module,
delete version in DME and re-initialize (Terminal 15 switch)

Fault effect and breakdown warning


Driver information
Warning light:
none

Service instruction
none