Honda 2006 Odyssey Owner's Manual page 406

State Emissions Testing
Select a nearby lightly traveled
major highway where you can
maintain a speed of 50 to 60 mph
(80 to 97 km/h) for at least 20
minutes. Drive on the highway in
D (A/T). Do not use the cruise
control. When traffic allows, drive
for 90 seconds without moving the
accelerator pedal. (Vehicle speed
may vary slightly; this is okay.) If
you cannot do this for a
continuous 90 seconds because of
traffic conditions, drive for at least
30 seconds, then repeat it two
more times (for a total of
90 seconds).
402
Then drive in city/suburban
traffic for at least 10 minutes.
When traffic conditions allow, let
the vehicle coast for several
seconds without using the
accelerator pedal or the brake
pedal.
Stop the vehicle, turn off the
ignition switch, and leave it off for
30 minutes.
If the testing facility determines the
readiness codes are still not set, see
your dealer.