BMW fault code 9AC1
Satellite vehicle center
In the satellite vehicle center, code 9AC1 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.
SFZ: Control-module fault (stack overflow)
Module version: Satellite vehicle center (SFZ)
In: 7 Series (E65) 2001–2008, 7 Series (E67) 2002–2008, 7 Series (E66) 2002–2008
SFZ: Coding-data fault
Module version: Satellite vehicle center (SFZ60)
In: 5 Series (E60) 2003–2010, 5 Series (E61) 2004–2010, 6 Series (E63) 2003–2010, 6 Series (E64) 2004–2010
Reading and clearing it
Fault code 9AC1 is a BMW code, stored in the car's satellite vehicle center, 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 satellite vehicle center 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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