Bosch dishwasher fills and drains but does not run cycle. Fault code E1?

this sounds like flow sensor failure,it it fails machine will either not fill up or fill and drain without washing its a cheap part to replace and is fitted downstream of inlet valve behind l/h/s side panel either attached to inle hose or heat exchanger.

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!

Probably jug impellor part number (424099) from espares, buyspares or bosch direct.
No fix unfortunately, this problem manifests as unit starts to fill and motor does not switch on. Eventually the unit overfills and the pump and fill start to alternate and check water light comes on. If this is the fault then this part is the solution it runs in line with the inlet valve and side fill chamber, take the left side panel off (looking from the front) it is tucked away behind the hoses bottom left (white plastic disc with two wire connection tag). Check water light can also come on if the unit is not pumping, if this is the case, repost and I will try and talk you through clearing this fault.

follow the instruction code in your ins.manual if you do not have go for free download : www. fitness.manualsonline.com or www.retrevo.com
sincerely. God bless you

Have same problem with 2 second cycling. I resolder at the point of heater relay. Thought I had solved the problem of running forever on 1. Now have this "new" problem that you have described.

Hi,
I think both the heater and thermostat / trip switches need to be checked.
If water is going in and out ok, then it seems to be waiting to heat the water. It sees a fault - so just clears out.
Heating elements do fail after a few years.

Hi,
It sounds as if the main program board has developed a fault - as it should come to a complete stop. The fact it kept the water valve open with the door open is a serious fault- so I would have it checked before using it again.

Most machines have a water-stop feature - so if it develops a leak - it will shut off the water. This clearly didn't happen.

My SHU43C is just over 3 years old. I had a similar problem recently. First, there were a few floods. Then, the Bosch only drained non-stop. Even when I used the Cancel Drain buttons the drain pump would run without stopping. When I tried to run one of the cleaning cycles, no water entered the machine. Corrective: I removed the base plate, and saw that the red plastic floatation device was in the up position. Using a flashlight and a wooden spoon, I lightly toggled the red float stem down. I pushed regular clean cycle and kept toggling with the red float stem until the rinse water started to enter the machine (turning the red stem seems to also actuate a step in the program). Now the dishwasher runs normally. Voila!

f is fill fault to much or not enough water or water in the sump white plastic base the f code will not go away until you solve the problem when the f code shows up the drain motor will run all of the time