Front left turn light signal does not work and back flashes fast i tried changing the bulb but it didnt help

Get the left signal to flash fast then walk around the car to see which light isn't flashing then change the bulb or socket if they all appear to be flashing (front and rear) turn on the right turn signal then look into the front and rear lens and count the number of bulbs flashing, now do the same thing on the left. Many times there's more than 1 bulb in each lamp. I hope this helps. Take care.

If the front and rear bulbs flash fast also, replace the hazard switch or you could live with it. As they are working. If one doesn't work, check grounds. I just run a new ground, much easier than cutting open the harness to find the break.

Take the bulbs out and see what it does.

I would change out the turn signal bulb on the right front. A blown bulb can cause the fast flash issue. The signals staying on is not related to the bulb being blown. That is most likely a problem with the multifunction switch, the knob you use to signal.

Has the car been in a fender bender ? check for wiring going to the front and rear lights to see if on has rubbed into a ground wire or the body. ( even if there has been no accident.)

Fast flashing occurs when one bulb in the circuit has failed. If the back turn signal bulb is flashing, then a front bulb has failed. Try replacing any remaining burned out bulbs (there may be more than one at the front and/or the back - if the right side is ok, check that side of the vehicle for locations reference). Be aware that the problem can also be one or more bad turn light bulb socket connections - in some cases, dielectric grease may have been added inside the sockets to inhibit corrosion. This is not usually a problem, but to be sure, make sure they are clean and free of corrosion.

as for the faster flashing thats as simple as a blown bulb, replace the bulb and see if that fixes the problem, it may fix the lot because the other symptoms you mention are a bad connection, if bulb is fine check the connection isnt loose or corroded over. if it is simply file it back to establish better connectivity,

I just had that problem with my jeep cherokee and either your bulb has burned out or it is burning out. Time to replace it. Turn the signal light lever on the side that's flashing fast, get out of the vehicle and look at the front and back signal lights and replace the one that isn't blinking...hope this helps.

Very simple the bulb is out. When the blinker does that its telling you the bulb needs to be replaced

Your front turn signal socket is shot. Buy a new one at the dealer for about 30.00. It will fix it. You may be able to clean it and wiggle it to get it to work. But it wont last very long. I had the same problem. Replaced the socket and it is fine. Note: If one side is bad the other side it not far behind. Probably 2 or 3 months it will go also. Good Luck.
Bill