BMW fault code 0107A9

Hybrid master control module

HCP: Clutch C4 in continuous speed-change transmission closed without authorization in operating mode EVT2

Module version: Hybrid master control module (HCP_72)

In: X6 (E72) 2009–2011

Reading and clearing it

Fault code 0107A9 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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