Page 1 of 33

Contents
Safe DrivingP. 4
Instrument Panel P. 6
DrivingP. 10
MaintenanceP. 16
Handling the UnexpectedP. 21
InformationP. 30
Safe Driving P. 4
Safety Labels P. 4
Instrument Panel P. 6
Indicators P. 6 Gauges and Displays P. 9
Driving P. 10
Before Driving P. 10When Driving P. 11Refueling P. 13
Maintenance P. 16
Maintaining the Fuel System P. 16 Maintenance MinderTM P. 17Replacing Light Bulbs P. 19
Handling the Unexpected P. 21
Tools P. 21 If a Tire Goes Flat P. 22 Fuel Leaks P. 25
Indicator, Coming On/Blinking P. 26 Fuses P. 27
Information P. 30
Specifications P. 30Fuel System P. 32 Authorized Manuals P. 33
This owner’s manual should be considered a permanent part of
the vehicle and should remain with the vehicle when it is sold.
This owner’s manual is for vehicles sold in the United States.
The information and specifications included in this publication
were in effect at the time of approval for printing. Honda Motor
Co., Ltd. reserves the right, however, to discontinue or change
specifications or design at any time without notice and without
incurring any obligation.
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Page 6 of 33

Indicators
6
Instrument Panel
IndicatorName On/Blinking ExplanationMessage
Malfunction
Indicator Lamp• Comes on when you turn the
ignition switch to ON
II, and
goes off either when the engine
starts or after several seconds
if the engine is not started. If
"readiness codes" have not been
set, it blinks five times before it
goes off.
• Comes on if there is a problem with the emissions control system.
• Comes on if there is a problem with the fuel system.
• Blinks when a misfire in the engine's cylinders is detected. • Readiness codes are part of the on
board diagnostics for the emissions
control systems.
Testing of Readiness Code s P.331,
Owner's Manual
• Comes on while driving - Have
the vehicle checked by an authorized
Honda Civic Natural Gas dealer as soon
as possible.
• Blinks while driving - Stop in a safe
place where there are no flammable
objects. Stop the engine for 10 minutes
or more, and wait for it to cool down.
Then, take the vehicle to a dealer.
If the Malfunction Indicator Lamp
Comes On or Blinks P. 2 6
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Page 7 of 33
7
Instrument Panel
IndicatorName On/Blinking ExplanationMessage
Low Fuel
Indicator• Comes on when you turn the
ignition switch to ON
II, and
goes off when the engine starts.
• Comes on when the fuel reserve is running low.
• Blinks if there is a problem with the fuel gauge. •
Comes on - Refuel your vehicle as
soon as possible.
When the outside air gets very cold
[below 25°F (
-4°C)], the pressure
of the natural gas inside the tank
goes down, and the fuel gauge may
indicate that you have less fuel than
what actually remains in the tank.
Keep this in mind if the low fuel
indicator comes on while you are
driving in cold weather.
• Blinks - Have the vehicle checked by
an authorized Civic Natural Gas dealer
as soon as possible.
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Page 8 of 33
Indicators Multi-Information Display Warning and Information Messages
8
Instrument Panel
Multi-Information Display Warning and Information Messages
MessageCondition Explanation
FUEL LID OPEN
• Appears when the fuel receptacle lid is open. Fuel Gaug e P. 9
The following messages appear only on the multi-information display. Press the (display/information) button to see the message
again with the system message indicator on.
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Page 9 of 33

9
Gauges and Displays
Instrument Panel
Gauges
Fuel Gauge Fuel Gauge
The quantity of fuel remaining in the tank is
calculated based on the pressure and temperature
of the natural gas in the fuel tank.
The gauge, average fuel, range, and instant fuel
economy show more or less than the actual
amount. The tank temperature, fill method, and
ambient conditions may affect the pressure and
temperature of the natural gas.
You can choose whether to reset trip A and average
fuel economy A when you refuel, using the multi-
information display.
Refueling a small amount of gas may not trigger trip
A and the average fuel economy to reset.
FUEL LID OPEN
Displays the amount of fuel left in the fuel
tank.
The lower ‘‘F’’ mark indicates a full tank at a
fill pressure of 3,000 psi.
The upper ‘‘F’’ mark indicates a full tank at a
fill pressure of 3,600 psi.
If the fuel receptacle lid is open, the fuel gauge blinks when you turn the ignition
switch to ON
II.
It stops blinking when you close the lid.
How to Refue l
P. 13
Upper "F" Mark
Lower "F" Mark
Fuel Gauge
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