Bosch dishwasher continues to run (Model SHX46A02UC)

Here are some links for your manual. The best one is probably the last one. It's free.
Bosch Dishwasher Owner Manual 00696013

http://www.searspartsdirect.com/partsdirect/user-manualsSHX46A02UC21-Bosch-DISHWASHER-manual

Bosch Dishwasher Model SHY56A05UC 23 Manuals Care Guides Literature Parts

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Here is the manual: http://wwashing.com/2013/10/06/bosch-ecel-washing-machine-instructions/

I would call Bosch with you.re model and serial number, they have had a recall on your model for the control board and that sounds like it may be your problem, if it is under recall Bosch will send someone out at no charge to install a new board (800) 856-9226

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!

I have a guide here to walk you through the process of clearing the drain system. You most likely have a clog somewhere and the dishwasher can't proceed because it would cause it to flood.

press the rinse & hold/quick wash buttons at the same time until dishwasher begins to cycle then release. Dishwasher will run quickly through the rest of the cycles (without starting them) back to ground zero.

There is a recall on the control board of many of these models, butyour problem is likely not related. It sounds like a plugged drain system or a possible bad drain pump. That's why you are hearing the pump running constantly. I have written a guide to help. It is here. Thanks!

it is likely a control module issue. I will take mine apart this weekend to verify what others have said: solder joint on circuitboard burns out from possible overheating, and DW doesnt go into rinse cycle. Try rinse and hold cycle to see if it stops on its own. mine does, but the other cycles which require the rinse to go to 156 degrees do not; the continue to run until I cancel and drain.

float switch is in the flood position and the drain pump is running.. there is water under the dishwasher or that switch is stuck up..

sounds as tho you have a foreign object stuck in the drain pump. only solution is to remove drain pump and check