BMW fault code 0004

Automatic heating/air conditioning

In the automatic heating/air conditioning, code 0004 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.

Rear room flap motor

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

Footwell flap motor left

Module versions: Automatic heating/air conditioning (IHKA38), Automatic heating/air conditioning (IHKA38_2), Automatic heating/air conditioning (IHKA38_3)

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

IHKA: Fresh air/recirculated-air flap motor,right

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

IHKA: Fresh-air/recirculated-air flap motor, right

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

IHKR: Evaporator sensor

Module versions: Heating/air-conditioning regulation (IHKR39), Heating/air-conditioning regulation (IHKR46)

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, Z4 (E86) 2006–2008, Z8 (E52) 2000–2003

Interior temperature sensor

Module version: Automatic heating/air conditioning (IHKA36)

In: 3 Series (E36) 1990–2000

IHKA: Rear-compartment-flap motor

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

Info auxiliary water pump monitor

Module version: Automatic heating/air conditioning (IHKA85)

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

Footwell flap motor left IHKA

Module version: Heating/air-conditioning regulation (IHKR38)

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

IHKS: Temperature-mixing-flap motor

Module version: Heating/air-conditioning control (IHKS52)

In: 3 Series (E36) 1990–2000

Reading and clearing it

Fault code 0004 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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