2021 HONDA CIVIC SEDAN check engine

611Continued
Information
Emissions Testing
Testing of Readiness Codes
Your vehicle has readiness code as part of the onboard self diagnostic system.
Some states use these codes for testing to verify whether your vehicle’s emissions
components are working properly.
The codes may not be read properly if testing is performed just after the battery has
gone dead or been disconnected.
To check if they are set, turn the ignition switch to ON
(w*1, without starting the
engine. The malfunction indicator lamp will co me on for several seconds. If it then
goes off, the readiness codes are set. If it blinks five times, the readiness codes are
not set.
If you are required to have your vehicle te sted before the readiness codes are ready,
prepare the vehicle for retest ing by doing the following:
1. Fill the gas tank to approximately 3/4 full.
2. Park the vehicle and leave the engine off for 6 hours or more.
3. Make sure the ambient temperature is between 40°F and 95°F (4°C and 35°C).
4. Start the engine without touching the ac celerator pedal, and let it idle for 20
seconds.
5. Keep the vehicle in
(P. Increase the engine speed to 2,000 rpm, and hold it there
for about 3 minutes.
6. Let the engine idle with your foot off the accelerator for 20 seconds.
*1: Models with the smart entry system have an ENGINE START/STOP button instead of an
ignition switch.
1 Testing of Readiness Codes
The readiness codes are erased when the battery is
disconnected, and set again only after several days of
driving under a variety of conditions.
If a testing facility determines that the readiness
codes are not set, you may be requested to return at
a later date to complete the test.
If the testing facility determines the readiness codes
are still not set, see a dealer.
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 611 ページ ２０２０年８月２５日　火曜日　午後２時６分

621
Index
Coolant (Engine)...................................... 531
Adding the Coolant ................................ 532
Overheating ............................................ 587
Creeping (Continuously Variable Transmission) .......................................... 431
Cup Holders .............................................. 184
Customer Service Information ................ 617
Customized Features ............... 115, 318, 325
D
Daytime Running Lights .......................... 161
Dead Battery ............................................ 583
Defaulting All the Settings ...................... 351
Defrosting the Windshield and Windows ................................................. 197
Devices that Emit Radio Waves ............... 609
Dimming
Headlights .............................................. 158
Rearview Mirror ...................................... 170
Dipstick (Engine Oil) ................................ 525
Directional Signals (Turn Signal) ............. 157
Display Setup .................................... 215, 250
Display/Information Button ............ 110, 228
Door Mirrors ............................................. 171
Doors ........................................................ 128
Auto Door Locking.................................. 141
Auto Door Unlocking .............................. 141
Door Open Message ........................... 37, 95
Keys........................................................ 128 Locking/Unlocking the Doors from
the Inside............................................... 138
Locking/Unlocking the Doors from the Outside............................................ 131
DOT Tire Quality Grading ........................ 551
Driver Information Interface ................... 109
Warning and Information Messages .......... 95
Driving ....................................................... 415
Braking .................................................... 494
Continuously Variable Transmission ......... 431
Shifting Position .............................. 432, 434
Starting the Engine .......................... 422, 425
Dust and Pollen Filter ............................... 562
E
Eco Assist® System ...................................... 11
ECON Button ............................................. 438
Elapsed Time ............................................. 112
Electric Power Steering (EPS) System Indicator ............................................ 85, 593
Electronic Stability Control (ESC) ............. 439
Emergency ................................................ 599
Emergency Engine Stop ........................... 582
Emergency Trunk Opener ................ 144, 601
Emissions Testing (Readiness Codes) ....... 611
Engine
Coolant ................................................... 531
If the Battery Is Dead ............................... 583
Oil ........................................................... 524
Starting ........................................... 422, 425 Switch Buzzer.......................................... 152
Engine Coolant ......................................... 531
Adding the Coolant................................. 532
Overheating ............................................ 587
Temperature Gauge ................................ 108
Engine Oil ................................................. 524
Adding .................................................... 527
Checking................................................. 525
Displaying Maintenance Minder Information ........................................... 516
Low Oil Pressure Indicator ................. 81, 589
Recommended Engine Oil ....................... 524
ENGINE START/STOP Button .................... 153
Exhaust Gas Hazard (Carbon Monoxide) .. 75
Exterior Care (Cleaning) ........................... 565
Exterior Mirrors ........................................ 171
F
Features.................................................... 201
Filters
Dust and Pollen ....................................... 562
Oil ........................................................... 528
Flat Tire ..................................................... 573
Floor Mats ................................................. 564
Fluids Brake ...................................................... 534
Continuously Variable Transmission (CVT) ..................................................... 533
Engine Coolant ....................................... 531
Windshield Washer ................................. 535
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 621 ページ ２０２０年８月２５日　火曜日　午後２時６分

624
Index
Lubricant Specifications Chart......... 604, 606
Luggage (Maximum Load Limit) .............. 419
M
Maintenance............................................. 511
Adding the Coolant ................................. 532
Battery..................................................... 558
Brake Fluid............................................... 534
Cleaning .................................................. 563
Climate Control System ........................... 562
Coolant ................................................... 531
Maintenance Minder
TM............................ 515
Oil ........................................................... 525
Precautions .............................................. 512
Remote Transmitter ................................. 560
Replacing Light Bulbs ............................... 536
Safety ...................................................... 513
Service Items............................................ 518
Tires ........................................................ 548
Transmission Fluid.................................... 533
Under the Hood....................................... 521
Malfunction Indicator Lamp .............. 81, 590
Map Lights ................................................ 181
Maximum Load Limit ................................ 419
Meters, Gauges ......................................... 108
Mirrors ....................................................... 170
Adjusting ................................................. 170
Door ........................................................ 171
Exterior .................................................... 171
Interior Rearview...................................... 170 Modifications (and Accessories)
.............. 568
Moonroof ................................................. 151
MP3 ................................................... 221, 277
Multi-View Rear Camera .......................... 503
N
Numbers (Identification).......................... 608
O
Odometer................................................. 111
Oil (Engine) ............................................... 524
Adding .................................................... 527
Checking................................................. 525
Displaying Maintenance Minder Information ........................................... 516
Low Oil Pressure Indicator ................. 81, 589
Recommended Engine Oil ....................... 524
Viscosity .................................................. 524
Open Source Licenses ............................... 316
Opening Trunk ...................................................... 601
Opening/Closing Hood....................................................... 523
Moonroof ............................................... 151
Power Windows ...................................... 148
Trunk ...................................................... 142
Opening/Closing the Moonroof .............. 151
Outside Temperature Display .................. 113
Overheating .............................................. 587
P
Paddle Shifters (7-Speed Manual Shift
Mode) ..................................................... 436
Pandora® ................................................. 275
Panic Mode ............................................... 147
Parking ..................................................... 501
Parking Brake ........................................... 494
Parking Brake and Brake System Indicator
(Amber) ....................................... 79, 80, 592
Parking Brake and Brake System Indicator (Red) .......................................... 78, 591, 592
Passenger Airbag Off Indicator ................. 59
Passing Indicators ..................................... 158
Playing Bluetooth ® Audio ............... 224, 280
Power Windows ....................................... 148
Precautions While Driving Rain ........................................................ 430
Pregnant Women ....................................... 44
Puncture (Tire) ......................................... 573
R
Radio (FM/AM)................................. 216, 256
Radio (SiriusXM ®)..................................... 260
Radio Data System (RDS) ................. 217, 258
Range ........................................................ 112
RDS (Radio Data System) ................. 217, 258
Readiness Codes (Emissions Testing) ...... 611
Rear Defogger/Heated Door Mirror Button ..................................................... 167
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 624 ページ ２０２０年８月２５日　火曜日　午後２時６分

625
Index
Rear Seat Heaters..................................... 192
Rear Seats (Folding Down) ...................... 175
Rearview Mirror ....................................... 170
Refueling .................................................. 505
Fuel Gauge ............................................. 108
Gasoline ......................... 505, 602, 604, 606
Low Fuel Indicator..................................... 83
Regulations .............................. 446, 551, 609
Remote Transmitter ................................. 135
Replacement Battery .................................................... 560
Bulbs ...................................................... 536
Fuses .............................................. 595, 596
Tires........................................................ 554
Wiper Blade Rubber ................................ 545
Reporting Safety Defects ......................... 610
Resetting a Trip Meter ............................. 111
Road Departure Mitigation (RDM) ......... 487
On and Off ............................................. 488
S
Safe Driving ................................................ 33
Safety Check ............................................... 37
Safety Labels .............................................. 76
Safety Message ............................................ 2
Seat Belts .................................................... 38
Adjusting the Shoulder Anchor ................. 43
Automatic Seat Belt Tensioners ................. 41
Checking .................................................. 45
Fastening .................................................. 42 Installing a Child Seat with a Lap/Shoulder Seat
Belt.......................................................... 69
Pregnant Women ...................................... 44
Reminder ................................................... 40
Warning Indicator ................................ 40, 83
Seat Heaters ...................................... 191, 192
Seats .......................................................... 172
Adjusting ................................................. 172
Front Seat Heaters ................................... 191
Front Seats .............................................. 172
Rear Seat Heaters .................................... 192
Rear Seats ............................................... 175
Security System ......................................... 145
Security System Alarm Indicator ................. 89
Selecting a Child Seat ................................. 66
Selector Knob (Audio) .............................. 209
Setting the Clock ...................................... 126
Shift Lever ................................... 24, 432, 434
Releasing ................................................. 586
Won’t Move ............................................ 586
Shift Lever Position Indicator ..... 82, 433, 435
Shifting (Transmission) ..................... 432, 434
Shoulder Anchor ......................................... 43
Side Airbags ................................................ 54
Side Curtain Airbags ................................... 56
Siri Eyes Free ............................................. 289
SiriusXM ® Radio ........................................ 260
Smart Entry with Push Button Start
System ..................................................... 131
Snow Tires ................................................. 556 Song By Voice
TM (SBV)
.............................. 271
Spare Tire .................................. 573, 605, 607
Spark Plugs ....................................... 604, 606
Specifications ............................................ 604
Specified Fuel ........................... 505, 604, 606
Speedometer ............................................ 108
SRS Airbags (Airbags) ................................. 49
Starting the Engine .......................... 422, 425
Does Not Start......................................... 580
Engine Switch Buzzer .............................. 152
If the Battery Is Dead ............................... 583
Steering Wheel Adjusting ................................................ 169
Stopping ................................................... 501
Summer Tires ............................................ 557
Supplemental Restraint System (SRS) ........ 49
Switches (Around the Steering
Wheel) ............................................. 6, 7, 152
System Message Indicator .......................... 87
T
Tachometer............................................... 108
Temperature
Gauge ..................................................... 108
Outside Temperature Display ................... 113
Temperature Sensor ................................. 113
Time (Setting) ........................................... 126
Tire Pressure Monitoring System (TPMS) ..................................................... 442
Indicator............................................ 86, 594
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 625 ページ ２０２０年８月２５日　火曜日　午後２時６分

626
Index
Tires........................................................... 548
Air Pressure ............................. 549, 605, 607
Checking and Maintaining ....................... 548
Inspection ................................................ 548
Labeling................................................... 549
Puncture (Flat Tire) ................................... 573
Regulations.............................................. 551
Rotation .................................................. 555
Spare Tire ................................ 573, 605, 607
Summer................................................... 557
Tire Chains .............................................. 556
Wear Indicators ....................................... 553
Winter ..................................................... 556
Tools .......................................................... 572
Towing Behind a Motorhome ................. 421
Towing Your Vehicle Emergency............................................... 599
TPMS (Tire Pressure Monitoring System) .................................................... 442
Indicator ............................................ 86, 594
Transmission ...................................... 432, 434
Continuously Variable
Transmission .................................. 432, 434
Fluid ........................................................ 533
Shift Lever Position Indicator ...... 82, 433, 435
TRIP Knob .................................................. 111
Trip Meter ................................................. 111
Troubleshooting ....................................... 571
Blown Fuse ...................................... 595, 596
Brake Pedal Vibrates .................................. 30
Buzzer Sounds When Opening Door .......... 31 Emergency Towing .................................. 599
Engine Won’t Start .................................. 580
Noise When Braking .................................. 32
Overheating ............................................ 587
Puncture/Flat Tire .................................... 573
Rear Door Won’t Open...................... 31, 140
Shift Lever Won’t Move ........................... 586
Warning Indicators .................................... 78
Trunk ......................................................... 142
Lid........................................................... 142
Light Bulb........................................ 604, 606
Release Lever........................................... 601
Unable to Open....................................... 601
Turbo Engine Vehicle ............................... 509
Turbo Meter ............................................. 113
Turn Signals .............................................. 157
Indicators (Instrument Panel) ..................... 87
U
Unlocking the Doors ................................ 131
Unlocking the Front Doors from the Inside ................................................ 138
USB Adapter Cable ................................... 202
USB Flash Drives ....................... 221, 277, 301
USB Port(s) ................................................ 203
Using the Smart Entry with Push Button Start
System ..................................................... 131
V
Vanity Mirrors .............................................. 9
Vehicle Identification Number ................ 608
Vehicle Stability Assist
TM (VSA ®).............. 439
Off Button .............................................. 440
Off Indicator ............................................. 85
System Indicator ....................................... 84
Viscosity (Oil) ............................ 524, 605, 607
Voice Control Operation ......................... 252
Audio Commands ................................... 254
Climate Control Commands.................... 255
General Commands ................................ 255
Music Search Commands ........................ 255
On Screen Commands ............................ 255
Phone Commands .................................. 254
Useful Commands .................................. 254
Voice Portal Screen ................................. 253
Voice Recognition ................................... 252
VSA ® (Vehicle Stability Assist) ................. 439
W
Wallpaper......................................... 212, 237
Warning and Information Messages ........ 95
Warning Indicator On/Blinking ............... 589
Warning Labels .......................................... 76
Warranties (Warranty Manual provided
separately) .............................................. 613
Watts ................................................ 604, 606
Wear Indicators (Tire) .............................. 553
Wheel Nut Wrench (Jack Handle) ........... 576
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 626 ページ ２０２０年８月２５日　火曜日　午後２時６分