Low beam bulb is burnt out. Replace it.
You need to change the light bulb, the high and low beam on some vehicles are contained in a single bulb. or you could have a bad connection on just that one light
well i think its the relay cause if one works and the other doesnt cause when the magnetic field is activated in it it will make the throw switch to the other pole
.
Try this! http://autorepair.about.com/od/fixityourself/qt/honda_mcu_reset.htm all power locks and the passenger side windows quit working, the fuse was fine I tried what it said at the above website. Everything works fine now!
The gauge has failed.
You can check the ground in the wiring if nothing else works. However, it would also be a good idea to see if you are just making a simple mistake. Sometimes the light-on switch is separate from the hi-beam/lo-beam switch; try pulling back on the turn signal lever while the light is on. It should switch between hi and lo beam.
Change the globe or lamp. H4 type globes contain the high and low beam, so whilst low beam is working OK the high beam part is likely blown.
There are two different bulbd, 1 for dipped beam and 1 for full beam.
It still works just fine.
burned out its two sided Depending what year you have some had separate fuses for each headlight function, check the fuses.
I had this problem with mine (1995 Civic) and after the 3rd mechanic got it, all he did was replace the computer and it works fine. The others had no clue there was a computer on board.
If you haven't already, replace the headlight. Chris