BMW 328i Sedan (E90) L6-3.0L (N51) P code charts 23
MIL OFF EML ON CC: Reduced power, engine
malfunction
RPM limited to 1300 rpm
Service instruction
none
P16A8
2D51 - P16A8
Information saved in
DME
Fault code
2D51 - P16A8
Fault text
Monitoring, air path
Fault description
Control Module Self-Test, Throttle Position Monitoring
Condition for fault identification
Test condition:
Control module monitoring
Throttle valve is not without current;
Throttle valve sensor fault not detected by standard
diagnosis
Terminal condition: Terminal 15 ON
Voltage condition:
Voltage in onboard electrical system >= 10 V
Condition for fault memory entry
480 ms
Action in service
Check throttle-valve potentiometer
At 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
P16A9
2D52 - P16A9
Information saved in
DME
Fault code
2D52 - P16A9
Fault text
DME, internal fault: monitoring, engine speed
Fault description
Control Module Self-Test, Speed Monitoring Reset
Condition for fault identification
Test condition:
Control module monitor
