BMW fault code 9871
Satellite, B-pillar, left
SBSL: Control-module fault (interruption discharge circuit ZK4 side airbag left/E60 thorax airbag rear left/E63 knee airbag front left)
Module version: Satellite, B-pillar, left (SBSL85)
In: 5 Series (E60) 2003–2010, 5 Series (E61) 2004–2010, 6 Series (E63) 2003–2010, 6 Series (E64) 2004–2010, Z4 (E85) 2002–2008, Z4 (E86) 2006–2008
Reading and clearing it
Fault code 9871 is a BMW code, stored in the car's satellite, b-pillar, left, 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, b-pillar, left is on: 5 Series (E60), 5 Series (E61), 6 Series (E63), 6 Series (E64), Z4 (E85), Z4 (E86)
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