Washer Will Not Drain

My washer was beginning to smell of dirty water, so I drained the water from the little pipe in the front the appliance. Since then, it has not drained properly and because it will not drain the door remains locked. I did a few test runs before adding in clothes and it worked perfectly fine, but now it has kept some clothes hostage with water still remaining. I have done the error code test and is showing me 03. How do I restart, fix this problem or at least get my clothes out?

Thank you.