I have an EE error on an am15 electric dishwasher.Unit filling ok,water level is good after fill and wash cycle. Wash and rinse temperatures are good and over 150 and 180 respectively.

Manual below, In troubleshooting it only shows P1, P2 & P3 contact dealer. You may find other info which may help
https://www.partstown.ca/modelManual/HOB-AM15T_spm.pdf
https://www.manualslib.com/manual/612400/Hobart-Service-Am15.html
This manual below is for several Hobart models and troubleshooting say check with Hobart service or water level probe in holding tank or refer to leaking valve in troubleshooting.
https://cdn2.webdamdb.com/md_1eYg2WvadTUF.jpg.pdf?1475613791
The link below has some ideas and suggestion dealing with water in the machine
https://hvac-talk.com/vbb/showthread.php?1560581-Hobart-AM15-T-wash-temperature-problem

Most likely sump temperature probe needs replacing.

Common Problem

1. Confirm the wash water is hot
   1. Try heated wash(sani wash) if available
   2. Run hot water in sink to warm up before starting
   3. At least 120 degree Fahrenheit water temperature
      
2. Open door check wash arm position start washer for a minute
   1. Confirm wash arm has rotated
   2. Check for plugged spray tips at either end of wash arm.
   3. Use small tweezers to remove
   4. Check for rack and dishes interfering with arm rotation
3. Place cup in upper rack with opening up cycle washer.
   1. Confirm that cup quickly fills with water
   2. Not washing check water level in tub mim 1 1/2 inch
4. Discontinue use of rinse/dry liquid additive.
   1. Confirm rinse/dry additive not leaking from dispenser into tub
   2. Washer detergent contains sparkle additive and too much sparkle/rinses/dry additive will coat dishes
   3. Try alternative wash detergent that contains minimal rinse/dry additive and use without liquid rinse/dry additive.
5. It will take several wash cycles after the elimination of rinse/dry to purge the oily film from dishes and machine..
6. If success "joy" is achieved with no additives then cautiously add back wash detergent with additives. Additives are important to facilitate drying and protecting the glassware china from leaching. The leaching process permanently etches the surface of glassware leaving a cloudy appearance.

normally if a dishwasher fills then pauses it is trying to read the water level if it fills again it is trying get a reading from the pressure switch when it cant determine the water level it will drain to prevent it leaking, however you should get a error code for this kind of fault which makes me think it is the control board which is at fault by not being able to read the sensor rather than the sensor itself not working

Here is an excerpt from "Bosch Dishwasher Troublesoooting".

Running a Test Cycle
Bosch dishwashers have a test cycle which can be run as a troubleshooting measure. The method to run this test cycle is similar across the Bosch dishwasher range so if your dishwasher features seems different from those described below then try experimenting, as the process is fairly straight forward and will be very similar. Bosch dishwasher model numbers are usually found around the top or lip of the door. One of the most common differences between dishwasher models is simply the names of the buttons. For example in the first example below, POWER SCRUB PLUS and REGULAR WASH may be called WASH and ECO depending on your dishwasher model and the country you are in. The other key difference is whether your dishwasher has a display panel (which can display error codes) or not (in which case a program light will illuminate to tell you the fault.
To run the test cycle hold down the POWER SCRUB PLUS and REGULAR WASH buttons. Whilst held down press the ON/OFF button. The lights above them should flash. Now you can check the status of each dishwasher program by pressing its button. Now you can run the full test cycle = Press the POWER SCRUB PLUS and REGULAR WASH buttons again. The dishwasher will start up and when the cycle has ended one, if you have no display panel on your dishwasher model the indicator lights will illuminate if a malfunction was detected as follows -
CLEAN - A temperature sensor fault. If this is the case then the test cycle will be very short as the dishwasher will terminate the test once it's been detected.
RINSE/DRY - A water sensor/filling fault. If this is the problem then the test cycle will not complete as the dishwasher cannot detect the right level of water, the dishwasher will just keep filling and draining again.
WASH - A heating fault. Check your heating element.
If you do have a display panel on your Bosch dishwasher then after the cycle is complete an error code will be shown if a fault has been detected. The error codes are as follows -
0 - No errors have been detected.
1 - A water sensor/filling fault.
2 - A heating fault.
4 - A water filling fault. This can also appear as F on the display during a normal cycle.
8 - A temperature sensor fault.
When troubleshooting your Bosch dishwasher, running the above test cycle is a good start in diagnosing the problem and should give you an idea of where the problem lies with your Bosch dishwasher and what fixes and repair are in order. Our general troubleshooting page will give you some ideas on other things to check on your dishwasher. Good luck!

The typical cycle is;
fills to selected water level
agitates wash cycle
drains wash water
spins wash cycle
fills to selected water level on rinse cycle
agitates on rinse cycle
drains rinse water
spins final time
end of cycle

The WM-1D does not have any internal heating devices. You have to supply the machine with the proper water temp. It has two fill valves, one for wash and one for rinse. It should have 150F supplied to the wash fill valve and 180F to the rinse fill valve.

After checking the service manual, I find no code for E1. There is a P1, or other E codes. Please list ML number.

How hot is the wash temp?It should be 150-165 degrees.The model is an am14 not an am15?I'm hobart tech and repair these units weekly.Let ne know.

Many dishwashers heat the wash and/or rinse water to a higher temperature, as the cycle calls for it. In these cycles, the dishwasher pauses after it has filled with water, waiting for the water to reach the pre-set temperature. What happens next, depends, as follows: On some units, the pause is timed and the unit continues after the allotted time. On others, the cycle can't continue until the water reaches the higher temperature. If you have this type of dishwasher and the water isn't being heated (say, because of a problem with the heating element or thermostat), after the unit stops at the heating cycle, it never continues. When you repair the heating-system problem, the "cycle problem" is fixed too. About the led: If your dishwasher has a digital readout and you see an error code, it may indicate a problem with the unit. If this happens, look up the error code in your owner's manual to find out what the problem is.