Unplug the range, open the control panel, disconnect the flex ribbon from the control board and use the isopropyl alcohol to clean the edge and control board plug.
Make sure it's all dry before plugging it in.
If that doesn't help - replace the control panel
Part number: W10122296
Check the color before ordering.
Here are the breakdown diagrams and Replacement parts for Whirlpool GY396LXPB01 30" Slide-In ELECTRIC OVEN SELF CLEAN | AppliancePartsPros.com