BMW fault code A784

Active backrest width, front passenger

ALBBF: Calibration, steering angle

Module version: Active backrest width, front passenger (ALBV60B)

In: 5 Series (E60) 2003–2010, 5 Series (E61) 2004–2010

Reading and clearing it

Fault code A784 is a BMW code, stored in the car's active backrest width, front passenger, 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 active backrest width, front passenger is on: 5 Series (E60), 5 Series (E61), 6 Series (E63), 6 Series (E64)

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