BMW fault code 0012

Automatic heating/air conditioning

In the automatic heating/air conditioning, code 0012 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.

Magnetic clutch air conditioning compressor

Module versions: Automatic heating/air conditioning (IHKA39), Integrated automatic heating/air conditioning system (IHKA39_2), Automatic heating/air conditioning (IHKA39_3), Automatic heating/air conditioning (IHKA39_4)

In: 3 Series (E36) 1990–2000, 3 Series (E46) 1998–2006, 5 Series (E39) 1995–2003, X5 (E53) 1999–2006, Z8 (E52) 2000–2003

free 0x12

Module versions: Automatic heating/air conditioning (IHKA38_2), Automatic heating/air conditioning (IHKA38_3), Heating/air-conditioning control (IHKS52)

In: 3 Series (E36) 1990–2000, 3 Series (E46) 1998–2006, 7 Series (E38) 1994–2001, X5 (E53) 1999–2006, Z8 (E52) 2000–2003

Evaporator sensor

Module versions: Automatic heating/air conditioning (IHKA38), Heating/air-conditioning regulation (IHKR38)

In: 3 Series (E46) 1998–2006, 7 Series (E38) 1994–2001, X5 (E53) 1999–2006, Z8 (E52) 2000–2003

IHKA: Interior temperature

Module versions: Automatic heating/air conditioning (IHKA46), Automatic heating/air conditioning (IHKA46_2)

In: 3 Series (E36) 1990–2000, 3 Series (E46) 1998–2006, X5 (E53) 1999–2006, Z8 (E52) 2000–2003

Interior temperature sensor

Module versions: Automatic heating/air conditioning (IHKA46_3), Automatic heating/air conditioning (IHKA83)

In: 3 Series (E36) 1990–2000, 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

Fresh air door motor

Module version: Automatic heating/air conditioning (IHKA36)

In: 3 Series (E36) 1990–2000

IHKA: Evaporator sensor

Module version: Automatic heating/air conditioning (IHKA39_5)

In: 3 Series (E36) 1990–2000, 3 Series (E46) 1998–2006, 5 Series (E39) 1998–2003, X5 (E53) 1999–2006, Z8 (E52) 2000–2003

IHKA: Potentiometer, temperature

Module version: Automatic heating/air conditioning (IHKA85)

In: X3 (E83) 2003–2010, Z4 (E85) 2002–2008, Z4 (E86) 2006–2008

IHKR: Shut-off valve, latent-heat accumulator

Module version: Heating/air-conditioning regulation (IHKR39)

In: 3 Series (E36) 1990–2000, 3 Series (E46) 1998–2006, 5 Series (E39) 1998–2003, X5 (E53) 1999–2006, Z8 (E52) 2000–2003

IHKR: Water valve

Module version: Heating/air-conditioning regulation (IHKR46)

In: 3 Series (E36) 1990–2000, 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

Reading and clearing it

Fault code 0012 is a BMW code, stored in the car's automatic heating/air conditioning, 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 automatic heating/air conditioning is on: 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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