Check paper is flashing when paper passes through fine

[LucyMcCabe]

My Hp c3180 says to check paper, yet there is paper and no jam, when i press cancel the paper is passed through fine

 

[hang-the-9]

Sounds like the sensor is messed up, check to see if anything is blocking the little plastic tab that goes against the paper. Also there can be small pieces of paper stuck in places that can be hard to see. Try re-seating the paper tray.