My left blinker suddenly stopped working. The light works if done manually. The right blinker works fine. I replaced the flasher sensor, but made no difference. All lights work, but the left will not blink automatically.
You probably have a bulb out. If you don't have a full load on the flasher, it won't heat it up enough to get it to blink. Check all of your bulbs.
Brian
I will check again, thank you.