2019 BMW 128i Convertible (E88) L6-3.0L (N51) A L L Diagnostic Trouble Codes ( DTC ): Manufacturer Code Charts Page 49
2AB6 - P16A5
Fault text
DME, internal fault: multiple output-stage module
Fault description
Timeout Control Module Multiple Output Stage SPI-Bus
Condition for fault identification
Test condition:
Driver circuit monitor
Terminal condition: Terminal 15 ON
Voltage condition:
none
Condition for fault memory entry
Yes, by event counter. Fault must occur ten times before a
fault memory entry is made.
Action in service
Determine whether fault is stored again after carrying out
the following procedure. If yes: Replace DME.
1. Clear fault memory
2. Ignition off, allow vehicle to assume complete dormant
status
3. Ignition on
4. Read out stored fault codes from fault memory
Fault effect and breakdown warning
Driver information
Warning light:
No warning message. No control activation possible from
some DME output terminals.
Service instruction
none
2ACB - P0686 (DME)
2ACB - P0686
Information saved in
DME
Fault code
2ACB - P0686
Fault text
DME master relay, activation
Fault description
ECM/PCM Power Relay Control Circuit Low
Condition for fault identification
Test condition:
Main relay monitoring
Main relay must have opened.
Terminal condition: First Terminal 15 OFF
(wait until main relay opens)
then Terminal 15 ON
(and leave ON)
Voltage condition:
Voltage in onboard electrical system > 10 V
Condition for fault memory entry
