BMW fault code AA0A
Combox emergency call
Emergency GSM antenna Open circuit
Module version: Combox emergency call (CECALLR)
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, X5 (E70) 2006–2013, X6 (E71) 2008–2014, X6 (E72) 2009–2011, Z4 (E89) 2009–2016
Reading and clearing it
Fault code AA0A is a BMW code, stored in the car's combox emergency call, 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 combox emergency call is on: 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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