BMW fault code 001A
Lights Module
In the lights module, code 001A 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.
Reserve Block 2
Module versions: Lights switching center (LSZ), Light switching center 2 (LSZ_2)
In: 3 Series (E46) 1998–2006, X3 (E83) 2003–2010, X5 (E53) 1999–2006, Z4 (E85) 2002–2008, Z4 (E86) 2006–2008, Z8 (E52) 2000–2003
LCM: High beam/headl. flasher, short circuit to negative
Module version: Light/Check Module IV (LCM_IV)
In: 3 Series (E46) 1998–2006, X5 (E53) 1999–2006, Z8 (E52) 2000–2003
FL / LH switch, short circuit to ground
Module version: Light/Check Module III (LCM_III)
In: 3 Series (E46) 1998–2006, 5 Series (E39) 1995–2003, 7 Series (E38) 1995–2001, X5 (E53) 1999–2006, Z8 (E52) 2000–2003
Reading and clearing it
Fault code 001A is a BMW code, stored in the car's lights module, 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 lights module is on: 7 Series (E38), 5 Series (E39), 3 Series (E46), Z8 (E52), X5 (E53), X3 (E83), Z4 (E85), Z4 (E86)
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