BMW 328i Sedan (E90) L6-3.0L (N51) P code charts 22
Fault description
Control Module Self-Test, Cruise Control Monitoring
Condition for fault identification
Test condition:
Control module monitoring
Throttle valve not without current;
Failure to comply with activation conditions for internal
vehicle speed controller
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 speed signal, brake light switch, main cruise control
switch
If frequency is >=3 Replace DME
Fault effect and breakdown warning
Driver information
Warning light:
MIL OFF EML OFF CC: Vehicle speed control
Vehicle speed controller is rejected
Service instruction
none
P16A7
2D51 - P16A7
Information saved in
DME
Fault code
2D51 - P16A7
Fault text
Monitoring, air path
Fault description
Control Module Self-Test, Hot Film Air Mass Meter
Monitoring
Condition for fault identification
Test condition:
Control module monitoring
Throttle valve not without current;
Air mass is implausible relative to injected fuel volume
Terminal condition: Terminal 15 ON
Voltage condition:
Voltage in onboard electrical system >= 10 V
Condition for fault memory entry
4 sec.
Action in service
Check air and fuel path
If frequency is > 3 Replace DME
Fault effect and breakdown warning
Driver information
Warning light:
