[Honda] High Temperature
What looks like a thermometer floating in water with the letter H to the top left could signify a high temperature in the engine.
The warning will be a solid red color and if it stays on even after you have switched the car off and let it cool then it could indicate a serious problem.
This warning light will be showing due to a problem in the cooling, which could be as simple as low oil or as bad as a faulty component.
Seek help from a trained Honda mechanic who can diagnose the cause and fix it.