On the Si, a faulty 3rd gear can cause problems shifting into third gear. Removing the transmission and replacing the third gear assembly is required to repair this issue.
Evaporators can collect mold and give off a foul smell. Disinfecting the evaporator or replacing it will address this issue.
On some models the fuel fill door does not open far enough to clear the body. A special designed fuel door spring boot from Honda will fix this issue.
On certain models the upper windshield molding vibrates at a higher speed causing a noise. Back filling the molding with silicone sealer will eliminate the noise.
On some models the bump stop in the strut can cause a noise on turns. Replacement of the bump stop will fix this problem.
The rear main oil seal can leak. The transmission has to be removed to replace the rear main seal on the engine.
CVT models (HX and GX) have a shudder, judder, and noise due to a worn start clutch in the transmission. Replacing the start clutch is needed to address this issue.
Some models have an issue were the windshield wipers won't shut off due to a bad internal switch. The wiper motor needs replacing for this issue.
The evaporative emission control solenoid can fail in areas of the country where salt is used on the roads during winter. The solenoid needs to be replaced to correct this issue.
Rear trailing arm bushings crack and break. The trailing arm bushings will need to be replaced when they break.
On some models the drivers and or the front passenger door glass will come out of it's track. The door glass will have to be replaced to address this issue.