2020 BMW 128i Coupe (E82) L6-3.0L (N51) Diagnostic Trouble Codes ( DTC ): Service instruction
none
CDA7
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
With manual transmission: Check CAN link between light module and DME.
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
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