BMW fault code A6A3
Soft top module
In the soft top module, code A6A3 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.
Hydraulic-fluid temperature sensor
Module version: Soft top module (CTM_89)
In: Z4 (E89) 2009–2016
CTM: Hydraulic-fluid temperature sensor
Module version: Convertible top module (CTM_93_5)
In: 3 Series (E93) 2007–2013
CTM: Hydraulic oil temperature sensor
Module version: Soft top module (CTM_93_6)
In: 3 Series (E93) 2007–2013
CVM: Control module: coding data error
Module version: Soft top module (CVM_64)
In: 6 Series (E64) 2004–2010
CVM: Voltage at terminal 30g under 5V
Module version: Convertible top module (CVM_88_2)
In: 1 Series (E88) 2008–2013
Reading and clearing it
Fault code A6A3 is a BMW code, stored in the car's soft top module, 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 soft top module is on: 5 Series (E60), 5 Series (E61), 6 Series (E63), 6 Series (E64), X1 (E84), 1 Series (E88), Z4 (E89), 3 Series (E90), 3 Series (E91), 3 Series (E92), 3 Series (E93)
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