One problem related to cruise control has been reported for the 2005 Honda Civic. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Honda Civic based on all problems reported for the 2005 Civic.
I was driving on the freeway approaching some traffic, slowing from about 60mph to a stop. As I was slowing down, I noticed that my engine rpm was staying relatively constant (vehicle was not downshifting), I could hear the engine revving, and the brakes seemed less effective at slowing my vehicle. It essentially felt as though I had cruise control on, but it wasn't cancelled by applying the brakes. I was able to slow down enough to not hit traffic stopped in front of me, but had to quickly switch to neutral to stop completely. When I shifted into neutral, the engine rpms jumped up before dropping back down after a few seconds. I put it back into drive to move off to the shoulder of the road and the car seemed to operate normally. After shutting my car off, checking the foot well for obvious issues with the brake/accelerator pedals, and waiting a few minutes, I put it back into drive. Everything seemed to function as usual, so I reentered the freeway cautiously. About a quarter mile later, after getting up to the speed of traffic (about 50 mph), I noticed the same issue: the car maintained a constant speed even when my foot was off of the accelerator. I pressed the brake to slow back down and get to the shoulder, but the engine kept trying to accelerate. I put it into neutral, the rpm spiked before slowing back down to idle. The car idles fine, and the issue isn't very apparent at lower speeds. I know for a fact that my floor mats were not on top of the accelerator pedal, there were no other items in the foot well which may have interfered with either pedal, and my foot was not hitting both pedals while trying to brake.