I have a 2000 Honda Accord. As of a few days ago, the right turn signal blinks endlessly, regardless of what position the switch is in. This only occurs while the car is running. The left turn signal does not turn on at all. The hazards and all other lights and functions appear to work normally. I’m not sure where to start diagnosing this problem.
I’d say you need to replace the signal switch. You’ll have to remove the steering wheel to get to it but if you have air bags, you might want to leave this job to a professional.