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Parts for Whirlpool DU1300XTVB2 Dishwasher - AppliancePartsPros.com

The file is too big, I had to use a third party site.
So below is the tech sheet.
Unclick the Use our download manaager button and then use the grey button to download it. Otherwise the site may put software on your computer that you do not want.
Download DU1300.pdf

The usual way to troubleshoot these types of problems is to check the keypad with a meter, see the tech sheet.
If it fails then replace it.
If it passes then replace the control board.
Still a bit of a crap shoot but your odds are better.

You will notice that each ribbon cable wire effects a number of keys.

You may want to try the following.
Connector Cleaning / Checking
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. Use electronics contact cleaner or isopropyl alcohol.
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.