Hello seniors and supertechnicians,

A am facing the same error, 2454 and 2453

I checked the toner density, and the toner density for cyan is 222, and it stop with error c2453
I add cyan toner manually and run density sensor check, the value is 74, increasing 90, 120, 130, 140, until 219, 220 and 221 then stop with error c2453,

the toner waste box is filled with cyan toner, equal with cyan toner I've added

what's wrong?

please advice...