Husqvarna SVARTPILEN 401 Owner's Manual page 57

If an error has occurred in the CAN bus, various warnings appear
on the display:
CAN FAILURE, CAN ABS FAILURE, and CAN EMS FAILURE
can appear.
ABS Failure appears on the display if the ABS is no longer
active.
H03972-01
Quick Shifter Failure appears on the display if the Easy Shift is
faulty.
ECU Failure appears on the display if the engine control unit
reports an error.
H03975-01
COMBINATION INSTRUMENT 7
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