BMW fault code 004A
Base module
In the base module, code 004A 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.
GM: Load/consumer shutdown: short circuit to ground
Module versions: Base module 5 (ZKE5), Base module 5 (ZKE5_S12)
In: 3 Series (E46) 1998–2006, X3 (E83) 2003–2010, Z4 (E85) 2002–2008, Z4 (E86) 2006–2008, Z8 (E52) 2000–2003
WI2 line short circuit to U-Batt or wiper relay 2
Module version: General module (ZKE3)
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 004A is a BMW code, stored in the car's base 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 base module is on: 3 Series (E36), Z3 (E36/7), 3 Series (E46), Z8 (E52), X3 (E83), Z4 (E85), Z4 (E86)
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