2004 HONDA ODYSSEY gas to use

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The maintenance schedule assumes
you will use your vehicle as normal
transportation for passengers and
their possessions. You should also
f ollow these recommendations:
Avoid exceeding your vehicle’s
load limit. This puts excess stress
on the engine, brakes, and many
other vehicle parts. The load limit
is shown on the tire inf ormation
label on the driver’s doorjamb.
Operate your vehicle on
reasonable roads within legal
speed limits. Driving less than 5 miles (8 km)
per trip or, in f reezing
temperatures, driving less than 10
miles (16 km) per trip.Follow the
Maintenance Schedule f or Severe
Conditions if you drive your vehicle
MAINLY under one or more of the
f ollowing conditions. Service your vehicle according to the
time and mileage periods on one of
the Maintenance Schedules on the
f ollowing pages.
Driving in extremely hot [over
90°F (32°C)] conditions. Trailer towing, driving with a roof
rack, or driving in mountainous
conditions.
Driving on muddy, dusty, or de-
iced roads.
If you only OCCASIONALLY
drive under a ‘‘severe’’ condition, you
should f ollow the Maintenance
Schedule f or Normal Conditions.
Follow the
Maintenance Schedule f or Severe
Conditions.
Always use unleaded gasoline with
theproperoctanerating(seepage ).
Drive your vehicle regularly over a
distance of several miles
(kilometers).
Extensive idling or long periods of
stop-and-go driving, such as a taxi
or a commercial delivery vehicle.
168
Maintenance Schedule
Maint enance
U.S. Owners Which Schedule to Follow:
Canadian Owners
203
NOTE:

Unscrew and remove the engine oil
fill cap on top of the valve cover.
Pour in the oil slowly and caref ully so
you do not spill. Clean up any spills
immediately. Spilled oil could
damage components in the engine
compartment.
Install the engine oil f ill cap and
tighten it securely. Wait a f ew
minutes and recheck the oil level. Do
not f ill above the upper mark; you
could damage the engine.Oil is a major contributor to your
engine’s perf ormance and longevity.
Always use a premium-grade 5W-20
detergent oil displaying the API
Certif ication Seal. This seal indicates
the oil is energy conserving, and that
it meets the American Petroleum
Institute’s latest requirements.
Honda Motor Oil is the pref erred
5W-20 lubricant f or your vehicle. It is
highly recommended that you use
Honda Motor Oil in your vehicle f or
optimum engine protection. Make
sure the API Certif ication Seal says
‘‘For Gasoline Engines’’.
The oil viscosity or weight is
provided on the container’s label.
5W-20 oil is f ormulated f or year-
round protection of your Honda to
improve cold weather starting and
f uel economy.
A dding Engine Oil
Maint enance
Recommended Engine Oil
211
ENGINE OIL FILL CAP
Ambient Temperature
API CERTIFICATION SEAL

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Check the condition of the battery
monthlybylookingatthetest
indicator window. The label on the
battery explains the test indicator’s
colors. Check the terminals f or corrosion (a
white or yellowish powder). To
remove it, cover the terminals with a
solution of baking soda and water. It
will bubble up and turn brown. When
this stops, wash it of f with plain
water. Dry off the battery with a
cloth or paper towel. Coat the
terminals with grease to help prevent
f uture corrosion.
If additional battery maintenance is
needed, see your Honda dealer or a
qualif ied technician.
Battery posts,
terminals, and related accessories
contain lead and lead compounds. If you need to connect the battery to
a charger, disconnect both cables to
prevent damaging your vehicle’s
electrical system. Always disconnect
the negative ( ) cable first, and
reconnect it last.
Maint enance
WARNING:
Wash your hands af ter handling.
Checking the Battery
235
TEST INDICATOR WINDOW
The battery gives off explosive
hydrogen gas during normal
operation.
A spark or flame can cause the
battery to explode with enough
force to kill or seriously hurt you.
Wear protective clothing and a
face shield, or have a skilled
mechanic do the battery
maintenance.

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Specif ications
T echnical Inf ormation267
Lights
Battery
Fuses Engine
Alignment
Tires
12 V 21 W
12 V 21/5 W
3.50 x 3.66 in (89.0 x 93.0 mm)
212 cu-in (3,471 cm
)
10 : 1
24/2.2 CP
12 V 1.8 W 12 V 8 W 12 V 21 W
12 V 3 CP 2CP
21 CP (18 W)
4CP
10 W
12 V
12 V
12 V
12 V 12 V
60/55 W (HB2)
12 V
65 AH/20 HR 52 AH/5 HR
12 V
12 V 0.00 in (0.0 mm)
0.00 in (0.0 mm)
0°
0°30’
2°07’
225/60R16 98T
T135/80D16 101M
36 psi (250 kPa , 2.5 kgf/cm
)
60 psi (420 kPa , 4.2 kgf/cm)
PZFR5F-11
PKJ16CR-L11
0.04 in (1.1 mm)
Headlights
Front turn signal/parking/side
marker lights
Rear turn signal lights
Stop/Taillights/Rear side
marker lights
Taillights
Back-up lights
License plate light
High-mount brake light
Individual map lights
Cargo area light
Vanity mirror lights
Capacity
Interior
Under-hood Type
BorexStroke
Displacement
Compression ratio
Spark plugs
Spark Plug Gap
Toe-in
Camber
Caster
Size
Pressure
See page 261or the fuse label
attached to the dashboard.
See page 261or the fuse label
attached to the inside of the fuse
box door under the dashboard.
See page 260or the fuse box
cover.
High/Low
Front/Rear
Spare
Front/Rear
Spare Front
Rear
Front
Rear
Front
Front
Rear
Driver’s side
Passenger’s side (Amber)
NGK:
DENSO:
Water cooled 4-stroke SOHC VTEC,6-cylinder, gasoline engine
0
0.1 mm

The exhaust emissions controls
include f our systems: PGM-FI,
Ignition Timing Control, Exhaust
Gas Recirculation and Three Way
Catalytic Converter. These four
systems work together to control the
engine’s combustion and minimize
the amount of HC, CO, and NOx that
comes out the tailpipe. The exhaust
emissions control systems are
separate f rom the crankcase and
evaporative emissions control
systems.
The PGM-FI System uses sequential
multiport f uel injection.
It has three subsystems: Air Intake,
Engine Control, and Fuel Control.
The Powertrain Control Module
(PCM) uses various sensors to
determine how much air is going
into the engine. It then controls how
much f uel to inject under all
operating conditions.This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.
The Exhaust Gas Recirculation
(EGR) system takes some of the
exhaust gas and routes it back into
the intake manif old. Adding exhaust
gas to the air/f uel mixture reduces
the amount of NOx produced when
the f uel is burned.
The three way catalytic converter is
in the exhaust system. Through
chemical reactions, it converts HC,
CO, and NOx in the engine’s exhaust
to carbon dioxide (CO ), dinitrogen
(N ), and water vapor.
The emissions control systems are
designed and certif ied to work to-
gether in reducing emissions to
levels that comply with the Clean Air
Act. To make sure the emissions
remain low, you should use only new
Honda replacement parts or their
equivalent f or repairs. Using lower
qualitypartsmayincreasethe
emissions f rom your vehicle.
The emissions control systems are
covered by warranties separate from
the rest of your vehicle. Read your
warranty manual f or more informa-
tion.
2
2
Exhaust Emissions Controls Replacement Parts
PGM-FI Syst emIgnit ion T iming Cont rol Syst em
Exhaust Gas Recirculat ion (EGR)Syst em
Three Way Catalytic Converter
T echnical Inf ormation
Emissions Cont rols
272

The three way catalytic converter
contains precious metals that serve
as catalysts, promoting chemical
reactions to convert the exhaust
gasses without af f ecting the metals.
The catalytic converter is ref erred to
as a three-way catalyst, since it acts
on HC, CO, and NOx. A replacement
unit must be an original Honda part
or its equivalent.
The three way catalytic converter
must operate at a high temperature
for the chemical reactions to take
place. It can set on f ire any com-
bustible materials that come near it.
Parkyourvehicleawayfromhigh
grass, dry leaves, or other f lamma-
bles.A defective three way catalytic
converter contributes to air pollution,
and can impair your engine’s per-
f ormance. Follow these guidelines to
protect your vehicle’s three way
catalytic converter.
Always use unleaded gasoline.
Even a small amount of leaded
gasoline can contaminate the
catalyst metals, making the three
way catalytic converter inef f ective. Keep the engine tuned-up.
Have your vehicle diagnosed and
repaired if it is misf iring, back-
f iring, stalling, or otherwise not
running properly.
Three Way Catalytic Converter
T echnical Inf ormation273
THREE WAY CATALYTIC CONVERTER

If you take your vehicle f or a state
emissions test shortly af ter the
battery has been disconnected or
gone dead, it may not pass the test.
This is because of certain ‘‘readiness
codes’’ that must be set in the on-
board diagnostics f or the emissions
systems. These codes are erased
when the battery is disconnected,
and set again only after several days
of driving under a variety of
conditions.If the testing f acility determines that
the readiness codes are not set, you
will be requested to return at a later
date to complete the test. If you must
get the vehicle re-tested within the
next two or three days, you can
condition the vehicle for re-testing
by doing the f ollowing.
Make sure the gas tank is nearly,
but not completely, f ull (around
3/4).
Make sure the vehicle has been
parked with the engine of f f or 8
hours or more.
Make sure the ambient
temperature is between 20° and
95°F. Without touching the accelerator
pedal, start the engine and let it
idle f or 20 seconds.
Keep the vehicle in Park
(automatic transmission). Increase
the engine speed to 2,000 rpm and
hold it there until the temperature
gauge rises to at least 1/4 of the
scale (approximately 3 minutes).
T esting of Readiness Codes
St at e Emissions T est ing
T echnical Inf ormation274

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Your new Honda is covered by these
warranties:
covers your new vehicle, except f or
the battery, emissions control
systems, and accessories, against
def ects in materials and
workmanship.
these two
warranties cover your vehicle’s emis-
sions control systems. Time, mileage,
and coverage are conditional. Please
read the warranty manual for exact
inf ormation.
this warranty gives up
to 100 percent credit toward a
replacement battery. a seat
belt that f ails to f unction properly is
coveredfortheusefullifeof the
vehicle.
all exterior body panels are
covered f or rust-through f rom the
inside f or the specif ied time period
with no mileage limit.
Honda Accessories are covered
under this warranty. Time and
mileage limits depend on the type of
accessory and other f actors. Please
read your warranty manual f or
details.
covers all Honda
replacement parts against defects in
materials and workmanship. provides
coverageforaslongasthepur-
chaser of the muf f ler owns the
vehicle.
Restrictions and exclusions apply to
all these warranties. Please read the
2004 Honda Warranty Inf ormation
booklet that came with your vehicle
f or precise inf ormation on warranty
coverages. Your Honda’s original
tires are covered by their
manuf acturer. Tire warranty inf or-
mation is in a separate booklet.
Please ref er to the 2004 Warranty
Manual that came with your vehicle. provides prorated
coverage f or a replacement battery
purchased f rom a Honda dealer.
Warranty Coverages
Warrant y and Cust omer Relat ions
U.S. Owners
Canadian Owners
New Vehicle L imit ed Warrant yEmissions Cont rol Syst ems Def ect sWarrant y and EmissionsPerf ormance Warranty
Original Equipment Bat t ery L imit edWarranty Seat Belt Limited Warranty
Rust Perf orat ion L imit ed Warrant y
Accessory Limited Warranty
Replacement Part s L imit edWarranty Replacement Muf f ler L if et ime
Limited Warranty
Replacement Bat t ery L imit ed
Warranty
279