HONDA 2004 Pilot - Owner's Manual - Manual (Page 231)

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.
If the testing facility determines
the readiness codes are still not
set, see your Honda dealer.
State Emissions Testing
Technical Inf ormation 227
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