2004 HONDA ODYSSEY check engine

´´
Are you using a properly coded
key? An improperly coded key will
cause the immobilizer system
indicator in the instrument panel
to blink rapidly (see page ).
Do you have f uel? Check the f uel
gauge; the low f uel indicator may
not be working.
There may be an electrical
problem, such as no power to the
f uel pump. Check all the f uses
(see page ).
If youfindnothingwrong,youwill
need a qualif ied technician to f ind
the problem. See on page . Although this seems like a simple
procedure, you should take several
precautions.
You cannot start a Honda by pushing
or pulling it.
Connect one jumper cable to the
positive ( ) terminal on your
Honda’s battery. Connect the
other end to the positive ( )
terminal on the booster battery. Put the transmission in Neutral or
Park, and set the parking brake. Turn of f all the electrical acces-
sories: heater, A/C, climate
control, audio system, lights, etc. Open the hood and check the
physical condition of the battery.
In very cold weather, check the
condition of the electrolyte. If it
seems slushy or like ice, do not try
jump starting until it thaws.
1.
2.
3.
76
257 255Emergency
Towing Jump Starting
If the Engine Won’t Start, Jump Starting
T aking Care of t he Unexpect ed
To Jump Start Your Vehicle:
248
NOTICE:
A battery can explode if you do
not follow the correct procedure,
seriously injuring anyone
nearby.
Keep all sparks, open flames,
and smoking materials away
from the battery. If a battery sits in extreme
cold, the electrolyte inside can f reeze.
Attempting to jump start with a f rozen
battery can cause it to rupture.

µ
Connect the second jumper cable
to the negative ( ) terminal on
the booster battery. Connect the
other end to the grounding strap
as shown. Do not connect this
jumper cable to any other part of
the engine.The numbers in the illustration
show you the order to connect the
jumper cables.
If the booster battery is in another
vehicle, have an assistant start
that vehicle and run it at a fast idle.
Start your vehicle. If the starter
motor still operates slowly, check
that the jumper cables have good
metal-to-metal contact.Once your vehicle is running,
disconnect the negative cable f rom
your vehicle, then f rom the
booster battery. Disconnect the
positive cable f rom your vehicle,
and then from the booster battery.
Keep the ends of the jumper cables
away from each other and any metal
on the vehicle until everything is
disconnected. Otherwise, you may
cause an electrical short.
4.
6.7.
5.
Jump Starting
T aking Care of t he Unexpect ed249
BOOSTER
BATTERY

Look f or any obvious coolant leaks,
such as a split radiator hose.
Everything is still extremely hot,
so use caution. If you f ind a leak, it
must be repaired bef ore you
continue driving (seeon page ).
If you don’t f ind an obvious leak,
check the coolant level in the
radiator reserve tank. Add coolant
if the level is below the MIN mark.
If there was no coolant in the
reserve tank, you may need to add
coolant to the radiator. Let the
engine cool down until the pointer
reaches the middle of the tempera-
ture gauge, or lower, bef ore check-
ing the radiator. Using gloves or a large heavy
cloth, turn the radiator cap
counterclockwise without pushing
down to the first stop. After the
pressure releases, push down on
the cap and turn it until it comes
off.
If the temperature stays normal,
check the coolant level in the
radiator reserve tank. If it has
gone down, add coolant to the
MAX mark. Put the cap back on
tightly. Put the radiator cap back on
tightly. Run the engine and watch
the temperature gauge. If it goes
back to the red mark, the engine
needs repair (seeon page ).
Start the engine, and set the
temperature control dial to
maximum (climate control to
FULL AUTO at 90°F/32°C). Add
coolant to the radiator up to the
base of the f iller neck. If you do
not have the proper coolant
mixture available, you can add
plain water. Remember to have
the cooling system drained and
ref illed with the proper mixture as
soon as you can.
5.
6.
7.
8.9.
255
10.
11.255
Emergency
Towing
Emergency
Towing
If theEngineOverheats
T aking Care of t he Unexpect ed251
Removing the radiator cap
while the engine is hot can
cause the coolant to spray out,
seriously scalding you.
Always let the engine and
radiator cool down before
removing the radiator cap.

This indicator should never
come on when the engine is
running. If it starts f lashing or stays
on, the oil pressure has dropped very
low or lost pressure. Serious engine
damage is possible and you should
take immediate action. Saf ely pull of f the road, and shut
of f the engine. Turn on the hazard
warning indicators.
Let the vehicle sit f or a minute.
Open the hood, and check the oil
level (see page ). An engine
very low on oil can lose pressure
during cornering and other driving
maneuvers.
If necessary, add oil to bring the
level back to the full mark on the
dipstick (see page ).
Start the engine, and watch the oil
pressure indicator. If it does not go
out within 10 seconds, turn of f the
engine. There is a mechanical
problem that needs to be repaired
bef ore you can continue driving.
(See
on page
). Immediately turn of f all electrical
accessories. Try not to use other
electrically operated controls such as
the power windows. Keep the engine
running; starting the engine will
discharge the battery rapidly.
Go to a Honda dealer or a service
station where you can get technical
assistance.
If the charging system
indicator comes on brightly
when the engine is running, the
battery is not being charged.
1.
2.
3.
4.
211
171
255
L ow Oil Pressure Indicator, Charging System Indicator
L ow Oil Pressure Indicator
Emergency T owingCharging System Indicator
T aking Care of t he Unexpect ed252
NOTICE:
Running the engine with low
oil pressure can cause serious
mechanical damage almost immediately.
Turn of f the engine as soon as you can
saf ely get the vehicle stopped.

If this indicator comes on
while driving, it means one
of the engine’s emissions control
systems may have a problem. Even
though you may f eel no dif f erence in
your vehicle’s perf ormance,
continued operation may cause
serious damage.
If you have recently ref ueled your
vehicle, the indicator could come on
because of a loose or missing f uel f ill
cap. Tighten the cap until it clicks at
least three times. Tightening the cap
will not turn the indicator turn of f
immediately; it takes at least three
days of normal driving.
If the indicator remains on, or the
f uel cap was not loose or missing,
have your vehicle checked by the
dealer as soon as possible. This indicator may also come on
along with the ‘‘D’’ indicator.
Your vehicle has certain ‘‘readiness
codes’’ that are part of the on-board
diagnostics f or 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 vehicle battery has been
disconnected or gone dead, these
codes are erased. It takes at least
three days of driving under various
conditions to set the codes again.To check if they are set, turn the
ignition switch to ON (II), without
starting the engine. The Malf unction
Indicator Lamp will come on f or 20
seconds. If it then goes of f , the
readiness codes are set. If it blinks 5
times, the readiness codes are not
set. If possible, do not take your
vehicle f or a state emissions test
until the readiness codes are set.
Refer to State Emissions Testing for
more information (see page ).
274
Malf unction Indicator L amp
T aking Care of t he Unexpect ed
Readiness Codes
253
NOTICE:If you keep driving with the
Malf unction Indicator Lamp on, you
can damage your vehicle’s emissions
controls and the engine. Those repairs
may not be covered by your vehicle’s
warranties.

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#
) This manual covers maintenance and recommended
procedures f or repair to engine and chassis components.
It is written f or the journeyman mechanic, but is simple
enough f or most mechanically-inclined owners to under-
stand.
This manual complements the Service Manual by
providing in-depth troubleshooting inf ormation f or each
electrical circuit in your vehicle.
This manual describes the procedures involved in the
replacement of damaged body parts.
Authorized Manuals
Service Manual:
Electrical T roubleshooting Manual:
Body Repair Manual:
282
NOTE: Dealers and Companies please provide dealer or company name,
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below for a quotation.
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City
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Check or money order enclosed payable to Helm Inc U.S. funds only.
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Check here if your billing address is different
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()
These Publications cannot be returned for credit without receiving advance authorization within 14
days of delivery. On returns, a restocking fee may be applied against the original order.

BatteryCharging System ...........................
Indicator .60, 252
............................
Jump Starting .248
..............................
Maintenance .235
............................
Specif ications .267
..............................
Bef ore Driving .167
....................................
Belts,Seat .8,20
.........................
Beverage Holders .106
..................................
Booster Seats .51
Brakes ...........
Anti-lock System (ABS) . 190
.............
Break-in, New Linings . 168....................
Bulb Replacement .223
...........................................
Fluid .218
.......................................
Parking .103
.................
System Indicator . 60,254
........................
Wear Indicators .189
.............................
Braking System .189
.................
Break-in, New Vehicle . 168
..
Brightness Control, Instruments . 72
........................
Brights, Headlights .71
Bulb Replacement ..........................
Back-up Lights .224
..............................
Brake Lights .223
................
Front Parking Lights . 222
........
Front Side Marker Lights . 222
.................................
Headlights .220
.........
High-mount Brake Light . 225
Bulb Replacement .........................
Rear Bulbs .223, 224
............................
Specif ications .267
....................
Turn Signal Lights . 222
..............................
Bulbs, Halogen .220
....................................
Accessories .174
ACCESSORY (Ignition Key .......................................
Position) .77
............
Accessory Power Sockets . 109
....................
Additives, Engine Oil . 212
...............
AdvancedAirbagSystem . 27
...............................
Airbag (SRS) .9, 24
..............
Air Conditioning System . 116
.....................
Rear A/C Control .123
.................................
Usage .119, 121
.......................
Air Outlets (Vents) .118
.......................
Air Pressure, Tires .230
.......................
Alcohol in Gasoline .168
..........................................
Antenna .227
......................................
Antif reeze .214
Anti-lock Brakes (ABS) ...............................
Indicator .61, 190
...................................
Operation .190
..............
Anti-thef t, Audio System . 144
.
Anti-thef t Steering Column Lock . 77
..........................................
Armrests .92
...............
Audio Controls, Remote . 143
................................
Audio System .126
...
Automatic Seat Belt Tensioners . 22 ...
Automatic Lighting Off Feature . 72
.............
Automatic Speed Control . 160
..............
Automatic Transmission . 184
..........................
Capacity, Fluid .266
...............
Checking Fluid Level . 216
.......................................
Shif ting .184
Shif t Lever Position ...............................
Indicators .184
................
Shif t Lever Positions . 185
....................
Shif t Lock Release . 186
CONT INUED
Index
A
B
I

CONT INUED
..............
Def rosting the Windows . 120
....................................
Dimensions .266
...............
Dimming the Headlights . 71
Dipstick ..........
Automatic Transmission . 216
..................................
Engine Oil .171
..........................
Directional Signals .71
........
Disc Brake Wear Indicators . 189
.....................
Disposal of Used Oil .213
Doors ..............
Locking and Unlocking . 78
....................
Lockout Prevention . 78
.................
Manual Sliding Doors . 84
..............................
Monitor Light .63
......................
Power Door Locks .78
...................
Power Sliding Doors . 84
..........
DOT Tire Quality Grading . 268
...........
Driver and Passenger Safety . 5
...........................................
Driving .181
....................................
Economy .173
..................
Dust and Pollen Filter . 227
....................
DVD Error Message .155
...................................
DVD Player .145 ..............................
Economy, Fuel .173
..................................
Emergencies .237
.............
Battery, Jump Starting . 248
...........
Brake System Indicator . 254
................
Changing a Flat Tire . 239
.....
Charging System Indicator . 252
..................
Checking the Fuses . 257
.........
Hazard Warning Flashers . 73
............................
Jump Starting .248
.....
Low Oil Pressure Indicator . 252
...
Malf unction Indicator Lamp . 253
..................
Overheated Engine . 250
.......................................
Towing .255
.........................
Emergency Brake .103
......................
Emergency Flashers .73
......................
Emergency Towing .255
.......................
Emissions Controls .271
.............
Emissions Testing, State . 274
Engine ....
Coolant Temperature Gauge . 67
..............
Engine Speed Limiter . 186
.........................
If It Won’t Start .247
Malf unction Indicator ................................
Lamp .60, 253 ........
Oil Pressure Indicator . 60,252
..............
Oil, What Kind to Use . 211
...............................
Overheating .250
............................
Specif ications .267
.......................................
Starting .183
.
Evaporative Emissions Controls . 271
...............................
Exhaust Fumes .54
Exhaust Gas Recirculation ........................................
System .272
Expectant Mothers, Use of Seat ........................................
Belts by .18
...................................
Fan, Interior .117
Features, Comfort and ..............................
Convenience .115
....................
Filling the Fuel Tank . 169
Filters .........................
Dust and Pollen .227
...............................................
Oil .212
.............
Flashers, Hazard Warning . 73
...................
Flat Tire, Changing a . 239
.....................................
Floor Mats .226
Index
E
F
III