2019 BMW 128i Convertible (E88) L6-3.0L (N51) A L L Diagnostic Trouble Codes ( DTC ): Manufacturer Code Charts Page 211
Fault effect and breakdown warning
Driver information
Warning light:
MIL OFF EML ON CC: Reduced power, engine
malfunction
RPM limited to 1300 rpm
Service instruction
none
2D56 - P16B1 (DME)
2D56 - P16B1
Information saved in
DME
Fault code
2D56 - P16B1
Fault text
DME, internal fault: monitoring, idle air control
Fault description
Control Module Self-Test, Idle Air Control System
Integrated Component Plausibility
Condition for fault identification
Test condition:
Control module monitor
Throttle valve not without current
With I component LL controller implausible or specified LL
rpm is too high
Terminal condition: Terminal 15 ON
Voltage condition:
Voltage in onboard electrical system >= 10 V
Condition for fault memory entry
480 ms
Action in service
If frequency >=3 Replace DME
Fault effect and breakdown warning
Driver information
Warning light:
MIL OFF EML ON CC: Reduced power, engine
malfunction
RPM limited to 1300 rpm
Service instruction
none
2D56 - P16B2 (DME)
2D56 - P16B2
Information saved in
DME
Fault code
2D56 - P16B2
Fault text
DME, internal fault: monitoring, idle air control
