BMW fault code 00BF
Engine electronics
In the engine electronics, code 00BF 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.
Ignition circuit monitoring cylinder 2
Module version: Motor Electronics (DM5212R5)
In: 7 Series (E38) 1994–2001
Reed switch does not open
Module version: Motor Electronics (MS411DS2)
In: 3 Series (E36) 1990–2000, 3 Series (E46) 1998–2006, 5 Series (E39) 1995–2003, 7 Series (E38) 1994–2001
DME: Heat output, ox.sensor after cat.conv., bank 2 (OBDII: P1187; EUIII: P0161)
Module version: Motor Electronics (MS420DS0)
In: 3 Series (E36) 1990–2000, 3 Series (E46) 1998–2006, 5 Series (E39) 1998–2003, 7 Series (E38) 1998–2001
DME: Insufficient heat output, oxygen sensor behind catalytic converter, bank 2
Module version: Motor Electronics (MS430DS0)
In: 3 Series (E36) 1990–2000, 3 Series (E46) 1998–2006, 5 Series (E39) 1998–2003, X3 (E83) 2003–2010, X5 (E53) 1999–2006, Z4 (E85) 2002–2008
Reading and clearing it
Fault code 00BF is a BMW code, stored in the car's engine electronics, 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 engine electronics is on: 8 Series (E31), 5 Series (E34), 3 Series (E36), Z3 (E36/7), 7 Series (E38), 5 Series (E39), 3 Series (E46), Z8 (E52), X5 (E53), X3 (E83), Z4 (E85), Z4 (E86)
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