Honda 2006 Odyssey Owner's Manual page 326

Maintenance Minder
When the remaining engine oil life is
less than 5 percent, you will see a
''CHANGE OIL'' message in the
odometer/trip meter display, along
with the same maintenance item
code(s), every time you turn the
ignition switch to the ON (II)
position.
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When the remaining engine oil life is
0 percent, you will see the above
display. In this display, the remaining
oil life indicator will be blinking. This
display comes on and stays on every
time you turn the ignition switch to
the ON (II) position. When you see
this message, have the indicated
maintenance performed by your
dealer as soon as possible.
You can change the display to the
odometer, the trip meter, or the
outside temperature by pushing the
SELECT/RESET knob on the
instrument panel.