BMW fault code FFF1
Bus system analysis
In the bus system analysis, code FFF1 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.
MOSTSYS: No communication with headunit
Module versions: Bus system analysis (MOST_60), Bus system analysis (MOST_89X)
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.
MOSTSYS: No communication with Control Display
Module version: Bus system analysis (MOST_65)
In: 7 Series (E65) 2001–2008, 7 Series (E67) 2002–2008, 7 Series (E66) 2002–2008
Reading and clearing it
Fault code FFF1 is a BMW code, stored in the car's bus system analysis, 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 bus system analysis is on: 5 Series (E60), 5 Series (E61), 6 Series (E63), 6 Series (E64), 7 Series (E65), 7 Series (E66), 7 Series (E67)
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