Coolant Light On, Coolant Res full?

[mccor023]

I did a full cooling hose overhaul few weeks ago ( New: rad, hoses, level sensor, temp sensor) and my coolant light is still going on. Initially I did find some leaks and corrected and have also bled system. Last few days the light would come on after engine warmed, and today it just came on right away even though I checked before starting and it was full.
Im not sure what to do next? Temp indicates about where it should be, or at least where it read before I started messin around.

[mr.vang]

The wire might be loose

[mccor023]

The wire might be loose

Nah, my problems are never that easy/
Ill still check it out though, because I haven't

[dnguyen1963]

Clean the sensor electrodes.

[AlexHale]

Grab a can of crc electrical cleaner and spray it, if it wiggles back off, take thin strips on painters tape and wrap it before you slide it on. This cured my light last week.