2004 Honda Civic Service and Repair Manual

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Factory-Grade Data

2004 Honda Civic service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical diagnostics with wiring diagrams
  • Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more

Trims covered

  • Hybrid Sedan 4-Door
  • DX Sedan 4-Door
  • Si Coupe 2-Door
  • Value Package Coupe 2-Door
  • EX Sedan 4-Door
  • LX Coupe 2-Door
  • EX Coupe 2-Door
  • DX Coupe 2-Door
  • LX Sedan 4-Door
  • HX Coupe 2-Door
  • Si Hatchback 2-Door
  • GX Sedan 4-Door
  • Si Sedan 4-Door
  • Value Package Sedan 4-Door
  • SiR Hatchback 2-Door

Engines covered

  • 1.3L 1339CC l4 FULL HYBRID EV-GAS (FHEV) SOHC Naturally Aspirated
  • 1.7L 1700CC l4 GAS SOHC Naturally Aspirated
  • 2.0L 1998CC 122Cu. In. l4 GAS DOHC Naturally Aspirated
  • 1.7L 1700CC l4 CNG SOHC Naturally Aspirated

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams

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Vehicle Safety Data

2004 Honda Civic Recalls & Complaints

NHTSA #19V50100027/06/2019Component: AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE

Honda (American Honda Motor Co.) is recalling certain 2003-2006 Acura MDX, 2005-2012 RL, 2003-2007 Honda Accord, 2001-2005 Civic, 2003-2005 Civic Hybrid, 2001-2005 Civic GX NGV, 2002-2006 CR-V, 2003-2

Consequence

An inflator explosion may result in sharp metal fragments striking the driver or other occupants res

Remedy

Honda will notify owners, and dealers will replace the passenger frontal airbag inflator, free of ch

NHTSA #19V49900027/06/2019Component: AIR BAGS:FRONTAL:DRIVER SIDE:INFLATOR MODULE

Honda (American Honda Motor Co.) is recalling certain 2003 Acura 3.2CL, 2002-2003 3.2TL, 2003-2006 MDX, 2001-2007 Honda Accord, 2001-2005 Civic, 2003-2005 Civic Hybrid, 2001-2005 Civic GX NGV, 2002-20

Consequence

An inflator explosion may result in sharp metal fragments striking the driver or other occupants res

Remedy

Honda will notify owners, and dealers will replace the driver frontal air bag inflator, free of char

NHTSA #04V55000018/11/2004Component: SEAT BELTS:FRONT:ANCHORAGE

ON CERTAIN PASSENGER VEHICLES, SOME FRONT SEAT BELT ANCHORS MAY HAVE BEEN INSTALLED WITH AN INCORRECT WASHER, WHICH COULD RESTRICT ANCHOR MOVEMENT. AS A RESULT, THE SEAT BELT MAY BE IMPROPERLY POSITI

Consequence

AN IMPROPERLY POSITIONED BELT COULD INCREASE THE RISK OF INJURY IN THE EVENT OF A CRASH.

Remedy

DEALERS WILL INSPECT THE FRONT SEAT BELT ANCHORS FOR RESTRICTED MOVEMENT. IF AN ANCHOR DOES NOT ROT

NHTSA #06E02300013/03/2006Component: EXTERIOR LIGHTING:HEADLIGHTS

CERTAIN ANZO COMBINATION HEADLAMP ASSEMBLIES SOLD AS REPLACEMENT LAMPS FOR USE ON CERTAIN PASSENGER VEHICLES. SOME COMBINATION LAMPS ARE NOT EQUIPPED WITH AMBER SIDE REFLECTORS WHICH FAIL TO CONFORM

Consequence

WITHOUT THE AMBER REFLECTORS, THE VEHICLE WILL BE POORLY ILLUMINATED, POSSIBLY RESULTING IN A VEHICL

Remedy

ANZO WILL NOTIFY OWNERS AND REPLACE THE HEADLAMPS FREE OF CHARGE. THE RECALL BEGAN MAY 9, 2006. OW

NHTSA #09E02500011/05/2009Component: EXTERIOR LIGHTING:HEADLIGHTS

DOPE, INC. IS RECALLING 42,540 COMBINATION CORNER AND BUMPER LAMP ASSEMBLIES OF VARIOUS PART NUMBERS SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES. THESE HEADLAMPS FAIL TO CONF

Consequence

DECREASED LIGHTING VISIBILITY MAY RESULT IN A VEHICLE CRASH.

Remedy

DOPE, INC. WILL NOTIFY OWNERS AND OFFER A FULL REFUND FOR THE NONCOMPLIANT COMBINATION LAMPS. THE S

TSB #10172566

Service Bulletin - This bulletin is a notification of a class action settlement relating to airbag inflators. American Honda is offering a Customer Support Program (Warranty Extension) to cover any manufacturing defects in the replacement f

TSB #10172561

Service Bulletin - This bulletin is a notification of a class action settlement relating to airbag inflators. American Honda is offering a Customer Support Program (Warranty Extension) to cover any manufacturing defects in the replacement d

TSB #10142648

Dealer message - On November 5, 2013, American Honda announced a passenger airbag collection activity for a small number of 2005 Civic vehicles. This activity involves inspecting and potentially replacing the driver?s airbag inflator assemb

TSB #10142652

Service bulletin - American Honda is conducting a study of driver airbag inflators from selected vehicles. With customer?s consent, remove the airbag module, inspect the inflator and, if the customer has a Takata inflator, replace the airba

TSB #10139567

Service bulletin - This bulletin is a notification of a class action settlement relating to airbag inflators. American Honda is offering a Customer Support Program (Warranty Extension) to cover any manufacturing defects to the replacement d

TSB #10139569

Service bulletin - This bulletin is a notification of a class action settlement relating to airbag inflators. American Honda is offering a Customer Support Program (Warranty Extension) to cover any manufacturing defects to the replacement f

TSB #10129461

Dealer message - On April 8, 2014, the 2003-05 Civic SRS healthy parts call-in activity will be expired. A sufficient number of parts have been collected for analysis, and no additional collection is necessary at this time. All VIN inquiry

TSB #10129452

Dealer message - American Honda (AHM) is investigating certain 2001-2005 Civics with fuel pump issues that require the fuel pump to be replaced. To fully understand the cause of the issue, AHM would like to collect the fuel pump from the ve

Showing the 8 most recent of 244 technical service bulletins on file with NHTSA.

20141227Component: AIR BAGSCrash reported2 injured

ON JULY 12, 2014 MY HUSBAND (DRIVER) AND MYSELF (PASSENGER) WERE INVOLVED IN A HEAD ON CRASH WITH MY 2004 HONDA CIVIC. TRAVELING AT APPROX. 35 MPH WE HIT A PARKED DODGE RAM TRUCK HEAD ON. MY HUSBAND

20060721Component: AIR BAGS:FRONTALCrash reported2 injured

DT*: THE CONTACT STATED, WHILE DRIVING AT 35 MPH., A POLICE VEHICLE ENTER FROM A SIDE ROAD, CAUSING A COLLISION. THE IMPACT WAS ON THE RIGHT FRONT SIDE OF THE VEHICLE. BOTH FRONT AIR BAGS FAILED TO DE

20220322Component: AIR BAGSCrash reported1 injured

The air bag failed to deploy during the vehicular collision on Jan.27, 2022 at the intersection in a city in Virginia. The HONDA Civic LX 2004 was hit by another vehicle on the driver side; the air ba

20200929Component: AIR BAGSCrash reported1 injured

WHEN I STOPED AT A STOP SIGN, MY AIRBAG DEPLOYED, KNOCKING ME UNCONSCIOUS. I PROCEEDED TO HIT A TREE GOING AT AN ACCELERATED SPEED. I WAS AIRLIFTED BY HELICOPTER TO A TRAMA HOSPITAL. I HAD 3 FRACTURED

20190320Component: AIR BAGSCrash reported1 injured

TAKATA RECALL DURING A JANUARY SNOWFALL AND FREEZE, I WAS TRAVELING IN THE MIDDLE LANE OF THE HIGHWAY AT APPROXIMATELY 50-60 MILES PER HOUR, WITH THE SPEED OF TRAFFIC. A CAR APPROXIMATELY 7-8 CAR

Showing the 5 most serious of 424 complaints filed with NHTSA.

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