Honda Civic Owner's Manual page 288

Maintenance Minder
MAINTENANCE MINDER INDICATOR
MAINTENANCE ENGINE OIL LIFE
ITEM CODE(S) INDICATOR
If the remaining engine oil life is 15
to 6 percent, you will see the engine
oil life indicator every time you turn
the ignition switch to the ON (II)
position. The Maintenance Minder
indicator will also come on, and the
maintenance item code(s) for other
scheduled maintenance items
needing service will be displayed
next to the engine oil life indicator.
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The 15 and 10 percent oil life
indicators remind you that your
vehicle will soon be due for
scheduled maintenance.
SERVICE MESSAGE
When the remaining engine oil life is
5 to 1 percent, you will see a
''SERVICE'' message along with the
same maintenance item code(s),
every time you turn the ignition
switch to the ON (II) position.