BMW fault code E726

Automatic heating/air conditioning

In the automatic heating/air conditioning, code E726 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.

Message error (units, 0x2F7), receiver integrated automatic heating / air conditioning system, transmitter instrument panel

Module versions: Automatic heating/air conditioning (IHKA87), Integrated automatic heating/air conditioning system (IHKA87_2), Heating/air-conditioning regulation (IHKR90), Heating control (IHR_87)

In: 1 Series (E87) 2004–2011, 1 Series (E81) 2007–2011, 1 Series (E82) 2007–2013, 1 Series (E88) 2008–2013, 3 Series (E91) 2005–2012, 3 Series (E90) 2005–2012, 3 Series (E92) 2006–2013, 3 Series (E93) 2007–2013, X1 (E84) 2009–2015, Z4 (E89) 2009–2016

CAN message, units

Module version: Automatic climate control (IHKA82E)

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.

No message (automatic rear air-conditioning system, 0x23E), receiver integrated automatic heating / air conditioning system, transmitter automatic rear air-conditioning system

Module version: Automatic heating/air conditioning (IHKA70)

In: X5 (E70) 2006–2013, X6 (E71) 2008–2014, X6 (E72) 2009–2011

Reading and clearing it

Fault code E726 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: 5 Series (E60), 5 Series (E61), 6 Series (E63), 6 Series (E64), 7 Series (E65), 7 Series (E66), 7 Series (E67), X5 (E70), X6 (E71), X6 (E72), 1 Series (E81), 1 Series (E82), X1 (E84), 1 Series (E87), 1 Series (E88), Z4 (E89), 3 Series (E90), 3 Series (E91), 3 Series (E92), 3 Series (E93)

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