My dishwasher sounds like it isn't getting water and after running for a minute it shuts off and start flashing the letter SE

https://removeandreplace.com/2015/12/21/dishwasher-has-beeping-sounds-blinking-lights-how-to-reset/
Dishwasher lights flashing or blinking. The heating element heats up the water to operating temperature. If the water doesn't reach the proper temperature after a set amount of time, a light on the control panel might start flashing. ... If the drain pump is not working, a light on the control panel might start flashing. https://www.repairclinic.com/RepairHelp/How-To-Fix-A-Dishwasher/28---/Dishwasher-Lights-Flashing-Or-Blinking
Flashing lights and or beep sounds can mean the dishwasher problem was from a power surge or power outage. You can unplug the dishwasher from power or shut off the breaker to the dishwasher for 1 minute. This may reset the dishwasher and get it back to working order.
https://removeandreplace.com/2015/12/21/dishwasher-has-beeping-sounds-blinking-lights-how-to-reset/

Hi, that sounds like you have a fault in the water inlet valve. Best get checked or replace the water inlet valve.

Hello

Possible causes;

Incoming Water; Most manufacturers recommend that the water coming into your dishwasher be at least 120 degrees Fahrenheit. If the water is too cold, then your dishes don't clean properly. Or the dishwasher must run longer to heat up the water. Test the water temperature by running the hot water on your faucet for about 2 minutes or until it gets really hot. Place a waterproof thermometer under the water. If the water is too cold, increase the water temperature setting on your water heater.

Thermostat;The thermostat is responsible for regulating the water and drying cycle temperature. If this thermostat isn't working, the heating element at the base of the dishwasher tub may not come on. Test this element by selecting the hottest temperature setting. Run the dishwasher on the shortest cycle. Let the dishwasher run for a few minutes, and open it up. If the dishwasher water is not hot or the drying cycle isn't starting, order a new thermostat from a parts dealer since this component is difficult to fix.

Heating Element/Drying Fan; The heating element heats up the water and air. Access this element by removing the bottom rack. It looks like a long black rod. If any part of this component is broken or corroded, you must order a new one. You usually cannot fix this element. The drying fan is located in the main housing of the dishwasher, and it blows air around your dishes to dry them. Check this part by disconnecting the dishwasher from the power supply and opening up the housing. Examine the fan, and see if any dirt or debris is preventing it from moving. Clean it. If the fan won't turn at all or if the motor is burnt out, order a new fan since it's difficult to repair this part.

If your dishwasher isn't drying your dishes properly, see if you have selected a heated drying cycle. An air drying cycle doesn't completely dry your dishes. Never overload the dishwasher, as this prevents heat from circulating around your dishes, keeping them from drying properly. Plastic and Teflon

most likely you have answered your question already... the drain pump is either obstructed or has failed... these units these days have plastic impellers inside and often go bad causing the drain motor to go bad... if the unit does not drain it will not allow the unit to run... is there water in the dishwasher? if it is empty of water then it sounds like you have a bad control or what is called a pcb board on unit

There may be a heating problem,if the water doesn't heat, the cycle can't progress further.

you will probably se the light flashes 7 times then pause and then repeats.this indicates that your unit did not heat the water correctly.
most likely youi dont have enough hot water going into the unit, 120degrees or more, or the latch is not engaging fully. check the temps and then the latch strike. its on the tank and is chrome type metal bracket.
it should be bent down towards the door frame until it just clears the door. if its too high it wont make the door switches work properly and then no heating of the water.
try it.
to get rid of the flashing, push the high temp wash, air dry, high temp wash, air dry. then it will go thru a test cycle and back to normal.
takes about 7-10 minutes.
tom

PF IS POWER FAILURE / LOOK AT CONNECTION IN HOOK UP BOX . SOUNDS LIKE THERE GETTING AN CAUSING AN OPEN . WHEN COOL THEY WORK ..MM MAY BE THE CONTROL BUT I DON'T THINK SO ..

sounds like a stuck key pad since you said the normal wash button flashed.. the other thing is try holding the door shut while you run it.. to see of it is maybe not latching properly..

You will have to reset the console. To do this, close the door and press these buttons in sequence...

-high temp wash
-heated dry
-high temp wash
-heated dry

...all the lights will turn on briefly and the machine will start a diagnostic cycle. You can press cancel or let the diagnostic cyle finish (1-2 minutes).
You should now be able to run the dishwasher as normal.