BMW fault code CB57
Hybrid Interface Module
HIM: Interface HCP (control, Duo water valve to heat exchanger, 0x2A5), signal invalid
Module version: Hybrid Interface Module (HIM_72)
In: X6 (E72) 2009–2011
Reading and clearing it
Fault code CB57 is a BMW code, stored in the car's hybrid interface 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 interface module is on: X6 (E72)
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