Yes
Pilot light alone will not produce enough heat to damage the tank, but the main burner will destroy the tank and possibly start a fire. Why would anyone want to leave the pilot light on an empty tank?
Spillage , bad thermocouple
It's possible hard water deposits have built up inside. To prevent this and the early demise of your water heater, drain and flush the heater at least once a year.
To effectively light a hot water tank, follow these steps: Turn off the gas supply to the tank. Locate the pilot light assembly and turn the knob to the "pilot" setting. Press and hold the pilot button while using a long lighter to ignite the pilot light. Continue holding the pilot button for about 30 seconds to allow the thermocouple to heat up. Release the pilot button and turn the knob to the "on" position. Turn the gas supply back on and adjust the temperature setting as needed.
remove the fuel tank and drain the water
The pilot setting will heat the water a few degrees. A gas water heater will have a thermal rating in BTU of 30,000 to 80,000. The pilot light by itself will have about 1,000 BTU. Operating overnight with no water movement and a well-insulated tank, you will observe a temperature rise but certainly not enough for clothes washing, dishwashers, or showers.
The check engine light on the Honda Pilot is an indicator that there may be a problem with the engine. This could be minor such as air or water in the gas tank or could be an indicator of something more serious.
Sound like maybe the bladder has burst in the tank and is covering the drain.
it should not be a water in oil tank it is mean engine cracked
To relight a hot water tank, locate the pilot light and follow the manufacturer's instructions to safely reignite it. Make sure to turn off the gas supply and wait for any lingering gas to dissipate before attempting to relight the pilot light. If you are unsure or uncomfortable with the process, it is recommended to contact a professional for assistance.
Shut the water supply to it and drain it.
It is the thin copper line coming out of the bottom of the control valve and running to the pilot light. Should follow the tube coming out of the bottom of the control valve that supplies gas to the pilot light.