Honda ACCORD HYBRID 2005 Service Manual page 285

Fuel Cap Warning Message
The PCM detects whether the fuel fill cap is loose or
missing under certain conditions and alerts the driver
by s h o w i n g the information in the odometer/outside
temperature display. If the PCM detects a small v o l u m e
leak, the MIL may come on during the second drive
cycle and store a DTC.
First drive cycle
During the first drive cycle after a cold start, the PCM
alerts the driver to check the fuel fill cap by s h o w i n g a
"CHECK FUEL CAP" message in the odometer/outside
temperature display (A), and it stores T e m p o r a r y DTC
P0457 "Evaporative Emission (EVAP) System Leak
Detected/Fuel Cap Loose or M i s s i n g " . Tightening the
fuel cap does not make the message go off immediately.
S h o w s "CHECK F U E L C A P " in the
odometer/outside temperature display
and stores temporary DTC
A
Second drive cycle
During the second drive cycle after a cold start, if the
fuel fill cap is still loose or missing, the PCM alerts the
driver to check the fuel fill cap by s h o w i n g a "CHECK
FUEL CAP" message in the odometer/outside
temperature display as same as the first drive cycle.
Tightening the fuel cap does not make the message go
off immediately.
Third drive cycle
During the third drive cycle after a cold start, if the fuel
fill cap is still loose or missing, the PCM stores DTC
P0457 "Evaporative Emission (EVAP) System Leak
Detected/Fuel Cap Loose or M i s s i n g " . The malfunction
indicator lamp (MIL) (A) comes o n , and the "CHECK
FUEL C A P " message goes off.
Stores DTC and MIL comes on
To make the message go off
Tighten the fuel fill cap three clicks, and do this
procedure several times.
1. Turn the ignition switch OFF.
2. Start the engine, and drive at a steady speed over
28 m p h (45 km/h), w i t h o u t m o v i n g the accelerator
pedal, for about 1 minute.
(cont'd)
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