How to Troubleshoot & Replace Samsung AP5176868 / DD94-01006A Assy-Case Sensor;Dmt800,

After a little research I decided to install a new assy-case brake (DMT800,R) and assy-case sensor (DMT800). 

Ordered a sensor unit. Sits on side of DW. Pulled dishwasher out of recess. Shut off power and water. needed screwdriver, pliers for hose clamp and strap wrench to remove grill which holds unit in place. Removed and replaced 

This happens now about every 2 1/2 years. The S5 error is a drain restriction error of some sort. The first time, I cleaned everything in the drain base and checked the tube to the drain pipe but it still came up S5 half way through the cycle.. While searching the web I read someone changed the water level sensor. It's an easy part to change. It has taken care of my problem twice now. I guess the contacts corrode because they are in contact with water. I also make sure to clean out the drain screen and base of all the goop that gathers. Also pull the turbine wheel out, there is a screen under there that really clogs up which sends water to the upper trays. 

Disconnect electrical and water supply and remove side support screws. Pull unit from cabinet and remove sheetmetal shield on the left side. Remove baffle cap on the left inside of the machine (note arrows that indicate which way to rotate). This allows the sensor to be pulled back to remove the electrical connectors and tube hose clamp. 

Ordered water level sensor from Appliance Pros, part arrived in 2 days, and was an exact replacement. Installed the part, dishwasher working properly 

I called a repairman and he said it would cost $400.00 to fix it. I said no way and went online to see what I could find out. I saw Appliance parts pros and the video so I ordered the part and it was here in 2 days and now my dishwasher works great. 

Disconnected the power, Pulled the unit out a few feet, Removed the plastic head on the left inside of the unit, Removed metal panel on the left outside, Disconnected one hose, Disconnected two electrical connections, Removed the failed unit (I had previously tried to clean it without a positive effect). Reversed process. Now the dishwasher works. 

Replaced the float assembly case and have had 4 successful runs without the error code. Before was getting the error at various times of the wash cycle. The repair job was easy and requires a screw driver and pair of pliers to squeeze the hose clamps. If you are comfortable with pulling out the dishwasher, turning off the power to it and unplugging some hoses and connectors and unscrewing a few things, the job is a pretty easy one. I would also mention that I had a big retailer service department (starts with SEA) come out and quote me on the main PCB board and a few other things that would have totaled hundreds of dollars when all that was really needed was this part. I am thankfully I have found this website as it has the parts and information that I needed to do the job and saved me serious cash! 

Removed dish washer. Removed left side panel. Disconnected electricity and turned off water. Removed vent inside dishwasher on left side. Tilted pressure sensor out. Disconnected two water tubes and two electrical connections. Replaced sensor and reinstalled dishwasher. Problem solved. Twenty minute job. Difficulty level low. 

Looked it up on Parts Pros and found the cause and the required part. When the part arrived it took me about an hour to install it. Most of the time was removing/replacing the dishwasher itself. It's been working great since.