2012 Honda Civic Service and Repair Manual

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Factory-Grade Data

2012 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
  • Base Sedan 4-Door
  • Si Coupe 2-Door
  • HF Sedan 4-Door
  • EX Sedan 4-Door
  • LX Coupe 2-Door
  • EX Coupe 2-Door
  • DX Coupe 2-Door
  • LX Sedan 4-Door
  • EX-L Coupe 2-Door
  • Hybrid-L Sedan 4-Door
  • Si HFP Coupe 2-Door
  • GX Sedan 4-Door
  • EX-L Sedan 4-Door
  • Si Sedan 4-Door

Engines covered

  • 1.5L 1497CC l4 FULL HYBRID EV-GAS (FHEV) SOHC Naturally Aspirated
  • 1.8L 1799CC l4 GAS SOHC Naturally Aspirated
  • 2.4L 2354CC 144Cu. In. l4 GAS DOHC Naturally Aspirated
  • 1.8L 1799CC 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

2012 Honda Civic Recalls & Complaints

NHTSA #11V28800018/05/2011Component: FUEL SYSTEM, OTHER:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS

HONDA IS RECALLING CERTAIN MODEL YEAR 2012 CIVIC 2-DOOR AND 4-DOOR VEHICLES MANUFACTURED FROM APRIL 21, 2011, THROUGH MAY 2, 2011. THERE IS A POSSIBILITY THAT AN O-RING, WHICH SEALS A CONNECTION IN T

Consequence

FUEL LEAKAGE, IN THE PRESENCE OF AN IGNITION SOURCE, COULD RESULT IN A FIRE.

Remedy

DEALERS WILL REPLACE THE FUEL FEED LINE ASSEMBLY FREE OF CHARGE. THE SAFETY RECALL BEGAN ON MAY 27,

NHTSA #12V25600004/06/2012Component: POWER TRAIN:DRIVELINE:DRIVESHAFT

HONDA IS RECALLING CERTAIN MODEL YEAR 2012 HONDA CIVIC VEHICLES. DURING ASSEMBLY, THE PROCESS REQUIRED TO SEAT THE DRIVER’S SIDE DRIVESHAFT AND SET THE RETAINING CLIP WAS NOT COMPLETED. AS A RESULT,

Consequence

IF THIS OCCURS, THE VEHICLE WILL HAVE A LOSS OF DRIVE POWER AND MAY ROLL AWAY IF THE PARKING BRAKE H

Remedy

Honda will notify owners, and dealers will inspect the driver's side driveshaft and install a new dr

TSB #10204289

2012 Civic Front Passenger's Air bag Inflator Collection. American Honda is conducting a study of front passenger's airbag inflators. This collection involves a small number of front passenger airbag inflators from specific locations. Once

TSB #10198771

Owner Notification Letter - Our records indicate that a EMISSIONS RECALL has not been completed on this vehicle (Vehicle Identification Number XXXXXXXXXXXXXXXXX). Under certain circumstances, your vehicle's powertrain control module (PCM) m

TSB #10167173

Owner Notification Letter - Under certain circumstances, your vehicle's powertrain control module (PCM) may not properly adjust the air-fuel ratio resulting in your vehicle releasing air pollutants which exceed California and Federal standa

TSB #10165578

Dealer Message - Today, September 24, 2019, American Honda is announcing a stop sale and emissions recall for certain 2012 Civic vehicles that may be releasing air pollutants that exceed applicable state and federal standards.

TSB #10165576

Service Bulletin - Due to an improper PCM calibration, after starting the engine the PCM cannot properly adjust the air-fuel ratio under certain conditions and the on-board emission-related diagnostic system may not appropriately detect a m

TSB #10165571

Service Bulletin - Due to an improper PCM calibration, under certain conditions after starting the engine the PCM cannot properly adjust the air-fuel ratio. As a result, vehicle emissions may exceed applicable standards.

TSB #10160545

ServiceNews Article - When removing and installing a cable reel, you need to keep both the cable reel and the steering angle sensor in position. If you don't , the VSA indicator may come on along with one or more VSA DTCs. And when you run

TSB #10154179

Service Bulletin - This bulletin has been cancelled because the collection is now complete. If you did the collection in this Service Bulletin on or before February 26, 2019 (RO date), use the Warranty Claim Information provided below.

Showing the 8 most recent of 76 technical service bulletins on file with NHTSA.

20141230Component: ELECTRICAL SYSTEMCrash reportedFire reported

I WAS DRIVING A 2012 HONDA CIVIC WHEN THE CAR IN FRONT OF ME SLAMMED ON THEIR BRAKES AND CAME TO A COMPLETE STOP DUE TO SOMETHING IN THE ROAD. I SLAMMED ON MY BRAKES AND TRIED TO AVOID THE CAR IN FRON

20141230Component: STRUCTURE:BODYCrash reportedFire reported

I WAS DRIVING A 2012 HONDA CIVIC WHEN THE CAR IN FRONT OF ME SLAMMED ON THEIR BRAKES AND CAME TO A COMPLETE STOP DUE TO SOMETHING IN THE ROAD. I SLAMMED ON MY BRAKES AND TRIED TO AVOID THE CAR IN FRON

20141230Component: ENGINECrash reportedFire reported

I WAS DRIVING A 2012 HONDA CIVIC WHEN THE CAR IN FRONT OF ME SLAMMED ON THEIR BRAKES AND CAME TO A COMPLETE STOP DUE TO SOMETHING IN THE ROAD. I SLAMMED ON MY BRAKES AND TRIED TO AVOID THE CAR IN FRON

20200124Component: AIR BAGSCrash reported7 injured

TL* THE CONTACT CALLED ON BEHALF OF HER MOM WHO OWNED A 2012 HONDA CIVIC. THE CONTACT STATED THAT WHILE DRIVING AT 50 MPH, THE VEHICLE WAS INVOLVED IN A CHAIN REACTION ACCIDENT. THE CONTACT STATED THA

20200124Component: SEAT BELTSCrash reported7 injured

TL* THE CONTACT CALLED ON BEHALF OF HER MOM WHO OWNED A 2012 HONDA CIVIC. THE CONTACT STATED THAT WHILE DRIVING AT 50 MPH, THE VEHICLE WAS INVOLVED IN A CHAIN REACTION ACCIDENT. THE CONTACT STATED THA

Showing the 5 most serious of 618 complaints filed with NHTSA.

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