BMW fault code 011A12

Hybrid master control module

BCM: Contactors, supply voltage (12V), undervoltage

Module version: Hybrid master control module (HCP_72)

In: X6 (E72) 2009–2011

Reading and clearing it

Fault code 011A12 is a BMW code, stored in the car's hybrid master control 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 hybrid master control module is on: X6 (E72)

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