Two problems related to emission control have been reported for the 2003 Honda Accord. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Honda Accord based on all problems reported for the 2003 Accord.
Rotten egg smell in and around 2003 Honda Accord ex-v6 model. First noticed when parking new car in garage, then noticed when parking outdoors. It has also occured twice while driving, to the extent where opening the windows and moonroof does not help. Car has approximately 2,000 miles. Dealer says it is not a problem.
I have had 3 pcs valves replaced in my 20003 Honda Accord. The vehicle would not start or emission light came on to indicate a problem. I also have a loud grinding sound the first time I use the brakes when driving.