Komatsu ecot3 WA430-6 Operation & Maintenance Manual page 67

EXPLANATION OF COMPONENTS EXPLANATION OF COMPONENTS
E01: When a failure occurs in the mechanical system, such as a
drop in the level of the engine coolant, the maintenance
location is displayed. If the maintenance caution lamp lights
up at the same time, inspect and perform maintenance of the
item indicated after completion of the day's work or when
changing shifts. If "MAINTENANCE" is displayed together
with E01, check the failure code and ask for repairs to be
carried out.
REMARK
"E01" is displayed on the top line of the character display and
"MAINTENANCE" or the part of the machine requiring inspection,
filling of fluid, or replacement is displayed on the bottom line.
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OPERATION OPERATION