HP Photosmart C5180 Ink system failure error Oxc18a0306?

HP Photosmart C5180 Ink system failure error Oxc18a0306?

Replaced magenta cartridge (twice) continue to get 'Ink system failure" I took the following action: turned it off, removed all ink cartridges, waited 5 min, pluged unit in, re-installed cartridges, same error came up. Ihave done this 3 times.