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