2DED

2DED is the engine computer's power-management entry for closed-circuit current: the current the car draws while parked. A 2009 E90Post thread quotes a sticky code list that prints it as "standby current control", says it does not cause a warning light, and explains that the closed-circuit current momentarily exceeds its threshold when the telematics unit wakes for its stolen-vehicle function and should not discharge the battery. Later threads and tools print "closed-circuit current violation". Not every poster saw a quiet code: one later poster reported an engine malfunction warning with reduced power, with other codes stored alongside 2DED, and another limp mode near redline.

The long E90Post thread has owners reporting different things. One with a boost gauge and satellite radio fitted was told anything wired to constant 12 volts can set it. One traced his to a hardwired dashcam and a Bluetooth adapter, unplugged both, and then wrote back that it had been a precursor to his water pump and thermostat failing and the accessories were coincidental. Others point at a Carly or a K-CAN OBD cable left plugged in; one stopped keeping a phone charging and the code went away; one thinks a six-year-old battery plus the adapter together did it; one saw it near redline with a tune and no other bolt-ons, with no cause found.

A 2024 thread shows measuring the draw. An owner of a 2006 330i saw a steady 300 mA after the car should have been asleep, which showed on three fuses (F51, F52, F53) feeding the CAS and FRM, and fell to zero only with all three out; it also fell when he unplugged both modules. A used junction box and new relays changed nothing and the CAS and FRM stored no faults. A later post says the FRM stayed awake because of the driver door lock actuator, which kept sending a signal to it (unplugging it ended that draw), while the CAS stayed on with all its inputs pulled, which the owner took to be a faulty module. A reply says a CAS can fail to sleep properly and that a sleeping car's normal draw is 40 to 50 mA.