It means that the alternator has failed- in the worst case. Other possibilities are that the cables connecting to the battery have come lose, or a fuse that controls the battery has blown.
Alternator is the first option to check. The vehicle will start till the time that you have juice in the battery, but the light means that the battery is not getting charged. Driving once started will take you the distance, but avoid using the horn, lights in the car... It can also mean you have a bad battery. It means you need to take it and get it checked. Check battery means check battery immediately if not sooner.
What year is your car? Did you mean the CHECK ENGINE light? The battery gauge?
Alternator is not charging the battery
Voltage regulator is defective. Have it replaced or this will ruin your battery.
It means ur battery in your key fob is low
It probably means the bulb burned out and needs to be replaced.
If you mean the " E " at the bottom of the fuel gauge that means the fuel tank is ( Empty , that there is no fuel left in the tank )
possible the battery is not grounded correctly?
it means that you have to change it soon or your car will suddenly stop working
It means at least one of the gauges is out of its normal range. The "check gauge light" is notifing you to take notice with either the engine temp gauge, the battery gauge or the engine oil pressure gauge.
first thing is to work out which part is at fault? I would start with dash gauge, find wire at fuel tank which goes to gauge, earth this wire out to body while having friend watch fuel gauge, if it goes straight to full it mean dash gauge is good but sender unit in fuel tank is probably at fault. Go to car wreckers for s/h part.
what does the light in teh dash that looks almost like a jellyfish or half sun mean in a dogde ram 2006 truck?
most likely the start of the alternator going bad.