BMW fault code 0000
Electronic battery isolator switch
internal error: internal voltage
Module version: Electronic battery isolator switch (ETS)
In: 7 Series (E38) 1998–2001
Reading and clearing it
Fault code 0000 is a BMW code, stored in the car's electronic battery isolator 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 electronic battery isolator switch is on: 8 Series (E31), 7 Series (E38)
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