low coolant light comes on and stays on. coolant level is fine and not overheating

It’s a faulty sensor I just replaced the coolant reservoir because of same reason and it did the same thing stayed on so I unplug sensor and just used a wire to jump the sensor and light went right off by the way coolant reservoir bad right out of the box I installed it and light went right on so I just did what I do unplug the bitch and tested the plug … plug works but sensor in reservoir doesn’t fyi this was a Dorman product and everytime i buy dorman I get problems need to go with oe acdelco product they actually work

I am just gonna cut the wire and splice together then the dash light will go away you really don’t need a sensor anyhow