BMW fault code 000B

Rear-compartment monitor

FMBT: I bus fault during transmission

Module version: Rear-compartment monitor (FOND_BT)

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 000B is a BMW code, stored in the car's rear-compartment monitor, 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 rear-compartment monitor is on: 7 Series (E38)

← 000A All rear-compartment monitor fault codes 000C →