One problem related to other fuel system pump has been reported for the 2003 Honda Civic. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Honda Civic based on all problems reported for the 2003 Civic.
My wife and I have owned our 2003 Honda Civic since it was new. Anyhow, a couple of weeks ago my wife noticed a very strong odor of gasoline from both in and around the vehicle. After a few days of looking under the car and not able to detect the problem, I removed the rear seat and noticed a large amount of gasoline under the seat. I removed the hatch to the fuel pump and noticed that the fuel pump assembly had numerous hair line cracks on the top area and when the car was in the on position, fuel was pouring out and going under the rear seat bottom. I have since ordered a replacement fuel pump assembly unit. Anyhow, this a very dangerous situation and could have had deadly effects as the electronics that charge the fuel pump are right where the gas was leaking. Additionally, if the driver of the car was a smoker, who knows what may have taken place. This issue is clearly a design flaw and I'm sure additional years of this model Civic have this same fuel pump assembly unit. The part number 17045-s5a-a31 (kautex.