The fault code you provided is a BMW-specific code and is related to a timeout in the communication between different control modules in the motorcycle. Specifically, it relates to the message that is sent when engaging the reverse gear.
The code itself does not provide much information other than that there was a timeout in the communication. It could be caused by a variety of issues, such as a faulty sensor, damaged wiring, or a problem with one of the control modules.
It's good to hear that the calibration of the gearbox and a short ride seemed to have resolved the issue. However, if the problem persists or returns, it would be best to have the bike inspected by a certified BMW technician. They will be able to use specialized diagnostic equipment to identify the root cause of the issue and make any necessary repairs.
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