Resoldering the relay, regardless of how proficient one is at soldering, will not be a long term solution. The melted/burned solder joint is a secondary result of the initial failure, which is the relay itself. There is a solution that is more permanent and less costly than replacing the control with a new one.
Do a search for Bosch 266746 control and you will locate someone who has studied the problem and found a safe, long term solution.
SOURCE: Installing a bosch dishwasher SHE44C06UC
just clip it to the side. I had the same questions after ours was installed wrong
SOURCE: Dishwasher Reset / Diagnostics
Unscrew and remove the kickplate at the very bottom of the dishwasher. The tech sheet with the diagnostic code should be attached to the back of it. If not, due a websearch and you should be able to find the info on yahoo or google.
SOURCE: Bosch dishwasher SHU66C02UC
You have water in the base of the machine. There is a flood float in the bottom so if any water gets into the base, it will shut off the water and run the drain pump as long as the power button is on. So shut off the breaker, remove the toe kick, and remove any water that is down there. Now start the machine and see if water is leaking into the base. If there isn't any water, an the dw is still running the drain pump, then with a wooden spoon raise the red plastice stick on the left side of the dishwasher up and down. It is possible that the overfil float is stuck. If this makes the dw start filling, then run cooking oil thru the dishwasher on the scrub cycle to remove excessive detergent. If you are in hard water, then the water deposits have caused this. Run citric acid ( Tang orange drink, Dishwasher Magic, or such) thru the dishwasher to remove this.
SOURCE: My Bosch dishwasher won't shut off. The timer says
Bosch SHE44C06UC
The dishwasher continues to run...I followed instructions and performed the diagnostic...the light above the quick wash was solid, the light above the rinse/hold was flashing...the code displayed in the cycle countdown window was P0...now assuming the machins isn't "pissed-off"..can you help-
SOURCE: Hello, I've got a Bosch dishwasher that is acting
Hello,
Welcome to FixYa.
Based on your description I'd say the issue is with the control...unfortunately.
The number"1" being displayed ( on models with the display ) is actually an error code indicating a fault in the heating process.
Bosch has had a history of this exact problem I'm about to lay out for you and this is the first thing I'd be looking for if called out to service the unit with the symptoms you've described.
As I've alluded to the issue is likely within the electronic timer/control, specifically the heater relay solder joint. ( a faulty flow switch, ntc or heater can also cause this, but not very probable ).
My first suggestion would be calling in an authorized bosch service tech. if that is an option for you and your budget however, If you feel capable of checking this on your own, there`s a way to visually inspect the control yourself.
It will require you to remove the control from the unit and then remove the control from it`s plastic housing and look for a burnt solder contact on the printed circuit board. 
The culprit will 99% of the times be one of the pins from the heater relay,
**Flip this over and inspect the solder joints, it will be obvious when you see it.**
This ones new, but it's where to look...
...hence the unit sit`s and takes longer & longer to finish because it can`t heat to advance or unless the 2 buttons for "cancel" are pressed, other-times it will eventually stop or display "1".
You can also run the unit through a regular or econo cycle ...any cycle with the exception of rinse & hold, and with the door panel removed place an ammeter on the gray/black wire it should draw 11 amps during the wash cycle...after it fills and the flow switch indicates it has adequate water to engage the heater.
i.e.
**My Opinion - if you or someone you know is proficient at soldering, a lot of times it can be remedied by simply repairing the solder...but it has to be done well...or it will not last, although Bosch recommend`s replacing the control and I don`t pretend to speak on there behalf nor do I profess to know better. This is just my experience (it work`s) and my opinion (why buy new if one can repair ?)**
**Please disconnect the power or turn off the breaker before attempting any service to the dishwasher.**
As you alluded to though, sometimes one needs to call a tech. If you do not feel comfortable attempting this service, call a local pro, preferably one familiar with Bosch/Thermador/Gaggenau/Siemens, to service your machine.
Hope this answer`s your question, let me know if I can assist you further.
Thank`s for visiting "FixYa" for your repair inquiries. Please take a moment and rate this solution to it's helpfulness.
Good luck.
Regards,
Macmarkus :)
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