[Nissan] Gas Cap Warning
An orange/yellow warning light showing what looks like a screw being taken out of the side of a car will most probably mean your car believes the gas cap is loose.
Pullover and tighten this cap and if this does not fix this (even after a complete restart of the car) seek help from a trained mechanic.
A loose gas cap warning could also be caused by a leak in the fuel line system and on some higher pressure fuel systems can cause the engine to act erratically.