BMW fault code 2779
Engine electronics
In the engine electronics, code 2779 means different things depending on the version of the module in the car. Find your car below; the app shows the right one for yours.
DME: Combustion misfires, cylinder 4
Module versions: Engine electronics (ME17N45), Engine electronics (MED17_2), Engine electronics (MED17_2N), Engine electronics (MEV17_2), Engine electronics (MEV17_2N), Engine electronics (MEV17N46)
Which BMWs have these versions depends on the engine and equipment, so we don't list them here; AutoLingo for BMW reads which version your car has.
DME: DME self test - RAM
Module versions: Engine electronics (ME9E65_6), Engine electronics (ME9K_NG4), Engine electronics (ME9N62), Engine electronics, cylinder bank 1 (N73_R0)
Which BMWs have these versions depends on the engine and equipment, so we don't list them here; AutoLingo for BMW reads which version your car has.
DME: DMTL leakage detection
Module versions: Engine electronics (MS_S65_2), Engine electronics (MS_S65_3), Engine electronics (MSS60)
Which BMWs have these versions depends on the engine and equipment, so we don't list them here; AutoLingo for BMW reads which version your car has.
Air mass flow sensor, operating range: Cycle duration too long, air volume too low
Module versions: Engine electronics (MEVD174K), Engine electronics (MEVD17KW)
Which BMWs have these versions depends on the engine and equipment, so we don't list them here; AutoLingo for BMW reads which version your car has.
Run-flat system: electrical machine overspeed
Module version: Engine electronics (EDME82)
Which BMWs have this version depends on the engine and equipment, so we don't list them here; AutoLingo for BMW reads which version your car has.
CDKURRAM - Control unit self-test RAM
Module version: Engine electronics (MEV9N46)
Which BMWs have this version depends on the engine and equipment, so we don't list them here; AutoLingo for BMW reads which version your car has.
DME: DME self-test: RAM
Module version: Engine electronics (MS450DS0)
Which BMWs have this version depends on the engine and equipment, so we don't list them here; AutoLingo for BMW reads which version your car has.
DMTL leak detection
Module version: Engine electronics (MS_S65)
Which BMWs have this version depends on the engine and equipment, so we don't list them here; AutoLingo for BMW reads which version your car has.
Combustion misfires, cylinder 4
Module version: Engine electronics (MV1722)
Which BMWs have this version depends on the engine and equipment, so we don't list them here; AutoLingo for BMW reads which version your car has.
Hot film air mass meter, operating range: Period duration too low, air mass too high
Module version: Engine electronics (MVD1722)
Which BMWs have this version depends on the engine and equipment, so we don't list them here; AutoLingo for BMW reads which version your car has.
Reading and clearing it
Fault code 2779 is a BMW code, stored in the car's engine electronics, not a generic OBD2 code (P0xxx): a generic OBD2 reader only reaches the engine's emissions faults, so it won't show it. AutoLingo for BMW reads it with BMW's own diagnostic protocols, in plain English, with the details the module stored about it, and clears it after a repair. If a fault comes right back after it's cleared, the problem is still there.
The engine electronics is on: 3 Series (E46), Z8 (E52), X5 (E53), 5 Series (E60), 5 Series (E61), 6 Series (E63), 6 Series (E64), 7 Series (E65), 7 Series (E66), 7 Series (E67), X5 (E70), X6 (E71), X6 (E72), 1 Series (E81), 1 Series (E82), X3 (E83), X1 (E84), Z4 (E85), Z4 (E86), 1 Series (E87), 1 Series (E88), Z4 (E89), 3 Series (E90), 3 Series (E91), 3 Series (E92), 3 Series (E93)
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