Dishwasher draining into kitchen sink!

Make sure drain hose has a high loop higher then sink and change you’re check valve which is part of drain hose

You need to clean that contaminated out of the dishwasher and clean the water level float and the screen at the bottom of the washer tub.

The dishwasher usually drains into disposal, or directly into tailpiece, and water drains down to the p-trap.
Trap may be clogged or stopped up.
Clean out drain line, tighten connection where dishwasher attaches.
Clean out bottom of disposal under cutter blade.
Copy following link for clogged disposal, and drain line tips.
http://waterheatertimer.org/How-to-repair-and-install-Garbage-disposal.html

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Two things to consider....clean water or dirty water?

Clean water usually indicates the fill valve is not shutting off all the way and the fill valve is "weeping" water in all the time = new fill valve time!!

Dirty water usually is not a dishwasher problem but more of a plumbing issue. Often the sink drain that carries the sinks water outside is not fast enough and some of this sink water is backing up into the drain hose and filling up the dishwasher through the drain hose. The drain from the sink to outside needs attention as this type of a problem indicates a slow house drain for that sink.

The dishwasher drain line should be clamped to the top underneath part of the counter before entering the sink drain plumbing, this may help the water from coming back inside the dishwasher.

I suppose "flooding in both drawers of ..." implies water is not draining out. Is that right?

It is a very little information to give you any clear solutions.

Did the water get into the drawers without starting any wash program? Most likely it is the backflow from kitchen sink back through the dishwasher drain hose. Does your kitchen sink plumbing have an air gap sowehere. If so, is it clear?

If the water is the back flow then it is likely to be smelly and you do not want to run it through the dishwasher. I would suggest take the drain hose out from under the sink downpipe and drop into an empty bucket. Then take all the fixtures out from the drawers and empty out water using a small container.

Put the washer arms back and run each drawer on a short rinse cycle collecting the drain water in the bucket. If cycle runs clear, then get plumber to check the kitchen downpipe.

Reconnect drain hose.

Hope this helps.

Yes, your sink drain needs cleaning -- it's clogged. Pour some bleach into the sink drains and let it sit for a couple of hours. Flush out with boiling hot water.

If this improves the situation but not completely solving the drain problem, try it again.

If that doesn't solve the problem, remove the P-traps on the sink drains under the sink and clean them out.

If that doesn't work, let me know -- we'll try something else.

Almost all dishwashers connect to the sink drain in one way or another. Many connect (via an Air Gap valve) to a garbage disposal.
If the "metal part" is at the rear of the sink, that is the top of the air gap. When water comes out of it, that means the drain is plugged.
If there is a garbage disposal, does water drain through it? Does the disposal work?
If there is no disposal, does water from the faucet run through the drain of each sink with no problem?
Thanks for answering these questions in a reply.

dishwasher drain enters sewer system tapped into waste pipe below kitchen sink
water flowing from kitchen sink passes the opening of the dishwasher pipe
If the dishwasher hose does not loop up higher than the kitchen sink before going down to the bottom of the dishwasher water may flow downhill through the dishwasher drain into the dishwasher
ensure the dishwasher drain hose is screwed to the underside of the kitchen counter, to provide a stop to water flow.
The installation instructions suggest this
but often the dishwasher is at the end of its 'stretch'
and the installer assumes looping is just to use up excess hose, and doesnt.
an extension drain hose is available at most appliance stores

You have a restricted drain in your sink, not the dishwasher. Water is unable to go down drain fast enough and is backing up.

Have had this problem twice on my DWI614. First time engineer came out and I watched what he did and asked questions. He removed panel at bottom of dishwasher (2 screws) after removing facia panel from kitchen as it is a built in dishwasher. To the right is the drain pump. Remove 1 retaining screw and hose retaining clip. Ease out the drain pump and make sure to have some cloth beneath as residual water will flush out. Before I did this the second time I removed as much water from inside with a small cup first. Both times I had blockages in the drain pump. First was a piece of glass and second some food. I also pulled the drain pipe forward and blew through to make sure path to sink was clear. Clear out and reassemble. Start a simple program before putting the front back panel back on and you can touch the drain opump and feel it working as the water drains properly. That was my fix both times, good luck.