Honda CBR1000RR Fireblade 2021 Manual page 91

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DTC
Displays a current problem with the vehicle.
If your vehicle has problem, DTC index is
displayed.
Reduce speed and have your vehicle
inspected by your dealer as soon as possible.
DTC indexes
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RACE KIT ECU USE HISTORY
"RACE KIT ECU USE HISTORY" is displayed
but not usable.
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