The e24 error code may be associated with a few problems. For the DIY person, we suggest first making sure the check valve is clear. Next, check the hoses for kinks, and make sure the filters are clean. These are the basic steps. After this, the dishwasher may have an issue with the pump or control panel and will require pulling the dishwasher out. For most folks, this is where we recommend calling a repairman. For newer models, it's possible that it is still under warranty.