2014 Accord 3.5L coupe. My issue is. All the dash warning lights are on and FCW system fail is displayed, but she runs normal. This happens only when I stop and sit at a stop during the first drive of the day every so often. But mostly or about 9 out of 10 times. That is the view on my dash. And rarely is the dash normal with no FCW fail or all warning lights on. I believe its a voltage issue. My OBD shows 12volts when driving and 14volts at idle for the most part. This seems abnormal? And very likely the cause. My guess is the voltage regulator or module in the fuse box is bad. Please advise if you have experienced of fixed anything similar..ty

 

Low voltage can cause strange problems. I'd suggest disconnecting the battery and cleaning the terminals and posts with a wire brush or sandpaper. Also follow the battery cables the best you can to see if the other ends show any corrosion that you may want to clean.

The voltage regulator is part of the alternator that charges the battery. When the engine is off the battery should read about 12.6V at the posts. When the engine is running, the voltage should be over 13.5V. That would be using a volt meter to do the measurement.