BMW fault code CB99

Hybrid brake-actuation changeover

Message (speed PT-CAN, 1A0) checksum wrong, receiver SBA (PT-CAN), transmitter DSC (PT-CAN)

Module version: Hybrid brake-actuation changeover (SBA_72)

In: X6 (E72) 2009–2011

Reading and clearing it

Fault code CB99 is a BMW code, stored in the car's hybrid brake-actuation changeover, 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 brake-actuation changeover is on: X6 (E72)

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