2003 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
- 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
- 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
HONDA IS RECALLING CERTAIN MODEL YEAR 2002 THROUGH 2004 CR-V; MODEL YEAR 2003 THROUGH 2005 PILOT; AND MODEL YEAR 2002 AND 2003 CIVIC VEHICLES. IN MARCH 2012, HONDA FILED A DEFECT REPORT TO RECALL CER
IF THE TERMINAL ENDS MELT WITHIN THE WIRING HARNESS CONNECTOR, THE LOW BEAM HEADLIGHTS MAY BECOME IN
HONDA WILL NOTIFY OWNERS, AND DEALERS WILL REPAIR THE LOW BEAM TERMINAL HARNESS OR REPLACE THE LIGHT
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
An inflator explosion may result in sharp metal fragments striking the driver or other occupants res
Honda will notify owners, and dealers will replace the passenger frontal airbag inflator, free of ch
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
An inflator explosion may result in sharp metal fragments striking the driver or other occupants res
Honda will notify owners, and dealers will replace the driver frontal air bag inflator, free of char
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
WITHOUT THE AMBER REFLECTORS, THE VEHICLE WILL BE POORLY ILLUMINATED, POSSIBLY RESULTING IN A VEHICL
ANZO WILL NOTIFY OWNERS AND REPLACE THE HEADLAMPS FREE OF CHARGE. THE RECALL BEGAN MAY 9, 2006. OW
K2 MOTOR IS RECALLING 1,921 AFTERMARKET HEADLAMPS OF VARIOUS MODELS SOLD FOR USE ON THE ABOVE LISTED VEHICLES. THESE HEADLAMPS ARE MISSING THE AMBER SIDE REFLEX REFLECTOR WHICH FAILS TO CONFORM WITH
WITHOUT THE AMBER SIDE REFLEX REFLECTORS, THE LIGHTING VISIBILITY MAY BE AFFECTED, POSSIBLY RESULTIN
K2 MOTOR WILL NOTIFY OWNERS AND OFFER A FULL REFUND. THE RECALL BEGAN ON DECEMEBER 17, 2008. OWNER
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
DECREASED LIGHTING VISIBILITY MAY RESULT IN A VEHICLE CRASH.
DOPE, INC. WILL NOTIFY OWNERS AND OFFER A FULL REFUND FOR THE NONCOMPLIANT COMBINATION LAMPS. THE S
SABERSPORT IS RECALLING 16,270 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
DECREASED LIGHTING VISIBILITY MAY RESULT IN A VEHICLE CRASH.
SABERSPORT WILL NOTIFY OWNERS AND OFFER A FULL REFUND FOR THE NONCOMPLIANT COMBINATION LAMPS. THE S
HONDA IS RECALLING CERTAIN MODEL YEAR 2003 HONDA ACCORD, CIVIC TWO AND FOUR DOOR, AND MODEL YEAR 2003-2004 HONDA ELEMENT VEHICLES. THE INTERLOCK LEVER OF THE IGNITION SWITCH MAY UNEXPECTEDLY DEFORM,
REMOVAL OF THE IGNITION KEY WHEN THE GEAR SELECTOR OF A VEHICLE WITH AN AUTOMATIC TRANSMISSION HAS N
DEALERS WILL REMOVE THE ORIGINAL INTERLOCK PIN AND LEVER WITHIN THE IGNITION SWITCH, AND REPLACE THE
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
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
Service bulletin - A manufacturing error can produce over-pressurization of some replacement driver's (front) airbag inflators during airbag deployment. If an affected airbag deploys, the increased internal pressure may cause the inflator c
Service bulletin - A manufacturing error can produce over-pressurization of the driver's (front) airbag inflator during airbag deployment. If an affected airbag deploys, the increased internal pressure may cause the inflator casing to ruptu
Service bulletin - A manufacturing error can produce over-pressurization of some replacement driver's (front) airbag inflators during airbag deployment. If an affected airbag deploys, the increased internal pressure may cause the inflator c
Service bulletin - Certain Honda vehicles operated in areas known for high absolute humidity may contain a front passenger's airbag that, over time, may be affected by exposure to the humidity, which could produce excessive internal pressur
Service bulletin - In certain vehicles, the passenger's (front) airbag inflator could produce excessive internal pressure during airbag deployment. If an affected airbag deploys, the increased internal pressure may cause the inflator casing
Service bulletin - Certain Honda vehicles operated in areas known for high absolute humidity and high heat may contain a driver's airbag that, over time, may be affected by exposure to the humidity, which could produce excessive internal pr
Showing the 8 most recent of 269 technical service bulletins on file with NHTSA.
THE CAR FLIPPED. *NM
1- 2003 HONDA CIVIC 4 DOOR,17000 MILES, UNEXPLAINED SPINNING, CRASH, AND SUBSEQUENT FIRE BURNED CAR TO A CRISP. DRIVER PULLED FROM CAR SUFFERING SHOCK AND INHALATION OF FUMES. *NM
CAR WAS IN A FRONTAL COLLISION. THE BACKSEAT OF THE 2003 HONDA CIVIC CAUGHT FIRE UPON THE FRONT IMPACT. THE FIRE DEPARTMENT COULD NOT DETECT WHY OR HOW THE FIRE STARTED. *TR
CAR WAS IN A FRONTAL COLLISION. THE BACKSEAT OF THE 2003 HONDA CIVIC CAUGHT FIRE UPON THE FRONT IMPACT. THE FIRE DEPARTMENT COULD NOT DETECT WHY OR HOW THE FIRE STARTED. *TR
TAKATA RECALL PREVIOUS COMPLAINT IN FEB. 2018, AND NO ACTION TAKEN, COMPLAINT # 11079970, AIR BAG RECALL, RESULTING IN NO ACTION TAKEN FROM HONDA, HEAD-ON ACCIDENT OCCURRED, AND AIR-BAGS SHOULD'VE DE
Showing the 5 most serious of 619 complaints filed with NHTSA.
