you have a light out that way it signal fast
One side, burned out bulb, both sides, faulty flasher relay.
You need to replace the turn signal bulb. When bulb is burnt out the turn signal will flash faster.
Usually when ones turn signal is blinking fast its telling you that a turn signal bulb (and in some cases a brake light bulb) is out. If it blinks fast when you turn on the the left signal the burnt out bulb is on that side of the vehicle (could be front or rear bulb so you'll have to check). And vice versa
A fast flashing turn signal, on most any vehicle, is an indicator that a turn signal bulb is going out or has gone out on that side(i.e. front turn signal on passenger side flashing fast, check the rear turn signal bulb on passenger side.) This will cause the light on your dash board to flash fast as well. This is generaly a good time to replace all of the bulbs, turn signal, running lights, and break lights, as they are so cheap. Also check deck light or top break light if applicable for burn outs.
Wrong light bulb.
If one turn signal is flashing fast it is to warn the driver they need to replaced either the front or back signal bulb.
After replacing the burned out turn signal bulb, turn on the hazard flasher and then turn off the hazard flasher. This will reset the flashing on the turn signal from super fast to standard flashing.
Change the front turn signal light bulb. It's bad.
One or two front turn signal bulbs is busted. Check your front turn signal bulbs and replace it.
your rear bulb is blown - replace the bulb The turn signal blinks fast because the bulb is going out. That is also why the others dont blink.
Sounds like a weak turn signal flasher
This is a easy fix go to your auto parts store and ask them for a heavy duty turn signal
Usually means the bulb is out. Turn on the turn signal then go out and see if the signal light is flashing.