BMW fault code 9C97

Automatic heating/air conditioning

In the automatic heating/air conditioning, code 9C97 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.

IHKA: Front stratification adjuster

Module versions: Automatic heating/air conditioning (IHKA87), Integrated automatic heating/air conditioning system (IHKA87_2)

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

Stratification potentiometer

Module versions: 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 (E90) 2005–2012, 3 Series (E91) 2005–2012, 3 Series (E92) 2006–2013, 3 Series (E93) 2007–2013, X1 (E84) 2009–2015, Z4 (E89) 2009–2016

No message (battery voltage) from the power module, receiver integrated automatic heating / air conditioning system, transmitter CAS/PM

Module version: Automatic heating/air conditioning (IHKA65)

In: 7 Series (E65) 2001–2008, 7 Series (E66) 2002–2008, 7 Series (E67) 2002–2008

IHKA: Front stratification control

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.

IHKA: Stratification adjuster

Module version: Automatic heating/air conditioning (IHKA89)

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

IHKA: Water valve, left

Module version: Automatic heating/air conditioning (IHKARR)

In: 7 Series (E65) 2001–2008, 7 Series (E67) 2002–2008, 7 Series (E66) 2002–2008

Reading and clearing it

Fault code 9C97 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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