Honda 2002 CL Owner's Manual page 294

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Readiness Codes
Your car has certain ''readiness
codes'' that are part of the on-board
diagnostics for the emissions
systems. In some states, part of the
emissions testing is to make sure
these codes are set. If they are not
set, the test cannot be completed.
If your car's battery has been
disconnected or gone dead, these
codes are erased. It takes several
days of driving under various
conditions to set the codes again.
If possible, do not take your car for a
state emissions test until the
readiness codes are set. Refer to
State Emissions Testing for more
information. (See page 315
To check if they are set, turn the
ignition ON (II), but do not start the
engine. The Malfunction Indicator
Lamp will come on for 20 seconds. If
it then goes off, the readiness codes
are set. If it blinks 5 times, the
readiness codes are not set.
Malfunction Indicator Lamp
.)
Taking Care of the Unexpected
291