Soak Light flashing

Soak light is flashing, dishwahser will not start
Cancel doesn’t do anything either.
When unplugged and plugged again, soak light comes on flashing. After hitting few keys, normal starts blinking again along with the Soak/Scour light. I had this problem before, and i think i tried some combination (rinse-dryheated) or soemthing like that, but it didn’t do trick this time.

Please advise.

Here are your parts
Replacement parts for WHIRLPOOL DU1100XTPB6 | AppliancePartsPros.com

Here is the tech sheet
http://www.servicematters.com/docs/wiring/Tech%20Sheet%20-%208535451.pdf

Sounds like it may be a stuck key.
Check the keypad out with a meter see the tech sheet.
You may also want to try the diagnostics.
If the keypad checks out then you may want to try the following though usually it only works for open keys.

Connector Cleaning
Unplug the unit
Open it up
Remove the ribbon cable from the keypad to the control board at the control board.
Clean the edge connector.
If it is the type where there is not a connector just the insulation is removed, it can be cleaned with a pencil eraser. Do not use an ink eraser as it is too abrasive.
Check the tracks in the ribbon cable for hairline cracks. A magnifying glass helps here.
Would not hurt to clean the connector on the board. Use electronics contact cleaner or isopropyl alcohol and a tooth brush. Be gentle and do not reconnect till all the solvent evaporates.
Reconnect everything and give it a try.