BMW fault code 2786
Engine electronics
In the engine electronics, code 2786 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: Throttle-valve potentiometer 1
Module versions: Engine electronics (ME9E65_6), Engine electronics (ME9K_NG4), Engine electronics (ME9N62), Engine electronics (MS450DS0)
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: Additional mixture adaptation
Module versions: Engine electronics (MED17_2), Engine electronics (MED17_2N)
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: Fuel-pressure sensor, plausibility to mechanical pressure regulator
Module versions: Engine electronics (MS_S65_2), Engine electronics (MS_S65_3)
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: switch-off, torque control (no torque)
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.
CDKDK1P - Throttle potentiometer 1
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: Fuel system, idling
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.
DME: Plausibility, fuel-pressure sensor, to mechanical pressure regulator
Module version: Engine electronics (MSS60)
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: Throttle-valve potentiometer 1, bank 1
Module version: Engine electronics, cylinder bank 1 (N73_R0)
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 2786 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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