BMW fault code DB04
Video switch
VS: K-CAN line fault
Module version: Video switch (VSW_70)
In: X5 (E70) 2006–2013, X6 (E71) 2008–2014, X6 (E72) 2009–2011
Reading and clearing it
Fault code DB04 is a BMW code, stored in the car's video switch, 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 video switch is on: X5 (E70), X6 (E71), X6 (E72)
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