2021 HONDA CIVIC SEDAN check engine

uuMaintenance Under the Hood uChanging the Engine Oil and Oil Filter
530
Maintenance
5. Remove the oil filter and dispose of the
remaining oil.
6. Check that the filter ga sket is not stuck to
the engine contact surface.
u If it is stuck, you must detach it.
7. Wipe away dirt and dust adhering to the
contact surface of the engine block, and
install a new oil filter.
u Apply a light coat of new engine oil to
the oil filter gasket.
8. Put a new washer on the drain bolt, then
reinstall the drain bolt.
u Tightening torque:
30 lbf∙ft (40 N∙m, 4.0 kgf∙m)
9. Pour the recommended engine oil into the
engine.
u Engine oil change capacity (including
filter):
3.7 US qt (3.5 L)
4.4 US qt (4.2 L)
10. Reinstall the engine oi l fill cap securely and
start the engine.
11. Run the engine for a few minutes, and
then check that ther e is no leak from the
drain bolt or oil filter.
12. Stop the engine, wait for three minutes,
and then check the oil level on the
dipstick.
u If necessary, add more engine oil.1Changing the Engine Oil and Oil Filter
You will need a special wrench to replace the oil
filter. You can buy this wrench from a dealer.
When installing the new oil filter, follow the
instructions supplied with the oil filter.
Reinstall the engine oil fill cap. Start the engine. The
low oil pressure indicator should go off within five
seconds. If it does not, turn off the engine, and check
your work.
Oil Filter
1.5 L engine models
2.0 L engine models
Oil Filter1.5 L engine models
2.0 L engine models
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 530 ページ ２０２０年８月２５日　火曜日　午後２時６分

531
uuMaintenance Under the Hood uEngine Coolant
Continued
Maintenance
Engine Coolant
This coolant is premixed with 50% an tifreeze and 50% water. Do not add any
straight antifreeze or water.
We recommend you check the engine coolant level every time you refuel. Check the
reserve tank. Add the engine coolant accordingly.
1. Make sure the engine and radiator are cool .
2. Check the amount of coolant in the reserve
tank.
u If the coolant level is below the MIN
mark, add the specified coolant until it
reaches the MAX mark.
3. Inspect the cooling system for leaks.
Specified coolant: Ho nda Long Life Antifreeze/Coolant Type 2
■Checking the Coolant
1Engine Coolant
NOTICE
Genuine Honda engine coolan t is a 50/50 mixture of
antifreeze and water that can withstand freezing at
temperatures as low as about −31°F (−35°C). If your
vehicle is consistently subjected to temperatures
below this, the concentration of antifreeze in the
coolant should be increased. Consult a dealer for
details.
If Honda antifreeze /coolant is not available, you may
use another major brand of non-silicate coolant as a
temporary replacement. Check that it is a high quality
coolant recommended for aluminum engines.
Continued use of any non-Honda coolant can result
in corrosion, causing the cooling system to
malfunction or fail. Have the cooling system flushed
and refilled with Honda anti freeze/coolant as soon as
possible.
3WARNING
Removing the reserve tank 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 reserve tank
cap.
MAX
MINReserve Tank
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 531 ページ ２０２０年８月２５日　火曜日　午後２時６分

535
uuMaintenance Under the Hood uRefilling Window Washer Fluid
Maintenance
Refilling Window Washer Fluid
Check the amount of window washer fluid by looking at the reservoir.
If the level is low, fill the washer reservoir.
If the washer fluid is low, a message appears
on the driver information interface.
Pour the washer fluid carefully. Do not overflow the reservoir.1Refilling Window Washer Fluid
NOTICE
Do not use engine antifreeze or a vinegar/water
solution in the windshield washer reservoir.
Antifreeze can damage y our vehicle’s paint. A
vinegar/water solution ca n damage the windshield
washer pump.
Use only commercially avai lable windshield washer
fluid.
Avoid prolonged use of hard water to prevent lime
scale build up.
Except Canadian 1.5 L engine models
Canadian 1.5 L engine models
Canadian models
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 535 ページ ２０２０年８月２５日　火曜日　午後２時６分

545Continued
Maintenance
Checking and Maintaining Wiper Blades
Checking Wiper Blades
If the wiper blade rubber has deteriorated, it will leave streaks, become noisy, and
the hard surfaces of the blade may scratch the window glass.
Changing the Wiper Blade Rubber
1.Turn the ignition switch to LOCK (0*1.
2. While holding the wiper switch in the MIST
position, turn the ignition switch to ON
(w*1, then to LOCK (0*1.
u Both wiper arms are set to the
maintenance position as shown in the
image.
3. Lift both wiper arms.
*1: Models with the smart entry system have an ENGINE START/STOP button instead of an
ignition switch.
1 Changing the Wiper Blade Rubber
NOTICE
Avoid dropping the wiper arm onto the windshield, it
may damage the wiper arm and/or the windshield.
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 545 ページ ２０２０年８月２５日　火曜日　午後２時６分

547
uuChecking and Maintaining Wiper Blades uChanging the Wiper Blade Rubber
Maintenance
7. Insert the flat side of the new wiper blade
onto the bottom part of the holder. Insert
the blade all the way.
8. Install the end of the wiper blade into the
cap.
9. Slide the holder onto the wiper arm until it
locks.
10. Lower both wiper arms.
11. Turn the ignition switch to ON
(w*1 and
hold the wiper switch in the MIST position
until both wiper arms return to the
standard position.
*1: Models with the smart entry system have an ENGINE START/STOP button instead of an
ignition switch.
Holder Blade
Cap
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 547 ページ ２０２０年８月２５日　火曜日　午後２時６分

571
Handling the Unexpected
This chapter explains how to handle unexpected troubles.
ToolsTypes of Tools .................................. 572
If a Tire Goes Flat
Changing a Flat Tire ......................... 573
Engine Does Not Start Checking the Engine ........................ 580
If the Smart Entry Remote Battery is Weak .. 581Emergency Engine Stop ................... 582
If the Battery Is Dead ....................... 583
Shift Lever Does Not Move .............. 586
Overheating How to Handle Overheating ............. 587 Indicator, Coming On/Blinking
If the Low Oil Pressure Indicator Comes On....589
If the Charging System Indicator Comes On ...589
If the Malfunction Indicator Lamp Comes
On or Blinks ................................... 590
If the Brake System Indicator (Red) Comes On or Blinks ................................... 591
If the Brake System Indicator (Red) Comes On or Blinks at the Same Time When the Brake
System Indicator (Amber) Comes On ... 592
If the Electric Power Steering (EPS) System Indicator Comes On ....................... 593 If the Low Tire Pressure/TPMS Indicator
Comes On or Blinks ....................... 594
Fuses Fuse Locations ................................. 595
Inspecting and Changing Fuses ........ 598
Emergency Towing ........................... 599
If You Cannot Unlock the Fuel Fill Door... 600
If You Cannot Open the Trunk ........ 601
Refueling ........................................... 602
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 571 ページ ２０２０年８月２５日　火曜日　午後２時６分

573Continued
Handling the Unexpected
If a Tire Goes Flat
Changing a Flat Tire
If a tire goes flat while driving, grasp the steering wheel firmly, and brake gradually
to reduce speed. Then, stop in a safe plac e. Replace the flat tire with a compact
spare tire. Go to a dealer as soon as possib le to have the full-size tire repaired or
replaced.
1. Park the vehicle on firm, level, non-slip pery surface and apply the parking brake.
2. Put the transmission into
(P.
3. Turn on the hazard warning lights an d turn the ignition switch to LOCK
(0*1.
*1: Models with the smart entry system have an ENGINE START/STOP button instead of an
ignition switch.
1 Changing a Flat Tire
NOTICE
Do not use the jack if it doesn’t work properly. Call
your dealer or a prof essional towing service.
Follow compact spare precautions:
Periodically check the tire pressure of the compact
spare. It should be set to the specified pressure.
Specified Pressure: 60 psi (420 kPa, 4.2 kgf/cm
2)
When driving with the compact spare tire, keep the
vehicle speed under 50 mph (80 km/h). Replace with
a full-size tire as soon as possible.
The compact spare tire and wheel in your vehicle are
specifically for this model. Do not use them with
another vehicle. Do not us e another type of compact
spare tire or wheel with your vehicle.
Do not mount tire chains on a compact spare tire.
If a chain-mounted front tire goes flat, remove one of
the full-size rear tires and replace it with the compact
spare tire. Remove the flat front tire and replace it
with the full-size tire that was removed from the rear.
Mount the tire chains on the front tire.
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 573 ページ ２０２０年８月２５日　火曜日　午後２時６分

580
Handling the Unexpected
Engine Does Not Start
Checking the Engine
If the engine does not start, check the starter.
Starter conditionChecklist
Starter doesn’t turn or turns
over slowly.
The battery may be dead. Check
each of the items on the right and
respond accordingly.
Check for a message on the dr iver information interface.●If the To Start, Hold Remote Near Start Button message appears2If the Smart Entry Remote Battery is Weak P. 581
uMake sure the smart entry remote is in its operating range.2 ENGINE START/STOP Button Operating Range P. 153
Check the brightness of the interior lights.
Turn on the interior lights and check the brightness.
●If the interior lights are dim or do not come on at all2Battery P. 558●If the interior lights come on normally2 Fuses P. 595
The starter turns over normally
but the engine doesn’t start.
There may be a problem with a
fuse. Check each of the items on
the right and resp ond accordingly. Review the engine start procedure.
Follow its instructions, and try to start the engine again.
2
Starting the Engine P. 422, 425
Check the immobilizer system indicator.
When the immobilizer system indicator is blinking, the engine cannot be started.
2Immobilizer System P. 145
Check the fuel level.
There should be enough fuel in the tank.
2 Fuel Gauge P. 108
Check the fuses.
Check all fuses, or have the vehicle checked by a dealer.
2Inspecting and Changing Fuses P. 598
If the problem continues:2Emergency Towing P. 599
1Checking the Engine
If you must start the vehi cle immediately, use an
assisting vehicle or booster battery to jump start it.
2 If the Battery Is Dead P. 583
Models with smart entry system
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 580 ページ ２０２０年８月２５日　火曜日　午後２時６分