First thing you want to do is make sure your cartridge fill holes are plugged. These carts need to be pressurized. Then if this doesn’t fix it, take all the carts out, put your epson’s in. If you get the same error with the epson carts you have a pressure tube or pump that is faulty. If you don’t get the error with the epson carts, put the IJM carts back in from left to right one at a time (meaning, replace one cart, put the ink cover back, wait for printer to pressurize, then do the next).
If it’s a specific cart that is causing a pressure error we’ll replace asap, but we haven’t seen this in years so it’s probably a pressure tube or pump. If the pressure tube/pump is bad, this also can cause nozzle problems.