BMW fault code C86D
fdm_vs
Low voltage during operation (Ubatt < 9V for at least one minute)
Module version: FDM_VS
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.
Reading and clearing it
Fault code C86D is a BMW code, stored in the car's fdm_vs, 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 fdm_vs is on: 5 Series (E60), 5 Series (E61), 6 Series (E63), 6 Series (E64)
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