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Michael, Customer Service
Category: Appliance
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Experience:  I have been an appliance repair tech for over 30 years and will help you solve your problems.
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Bosch SMS69L22 Dishwasher. Cuts short wash cycle and displays

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Bosch SMS69L22 Dishwasher.
Cuts short wash cycle and displays error message E:02
When door opened it is cold as if water was cold.
Hi I am Tech Michael.
The problem will be one of these three things: open heater, open NTC, failed control board.
The heater and NTC can be ohms tested for continuity/resistance.
The heater voltage (120vac) from the red wire from the control module. Remove the door panel and run the dishwasher. You should see 120vac on the red line at the control module a couple minutes into the wash cycle, after the basin has filled.
You can also check current draw, should see around 9 to 11 amps. However, the absence of this current draw doesn't' tell you whether you have a bad heater, NTC, or control board. That's why I like to start with the voltage test; If the control board is giving 120vac to the heater, then check current draw. If it's still an amp or so, then you know the problem is the heater or NTC. , I would just replace both at the same time. If your handy and have a few basic hand tools I will help you complete this repair when you have the parts.
The best place for those parts Espares listed below.
Please don’t forget to rate my service before closing this page,
then you can always contact me the very same way at no additional cost if you have further questions about this;-)
Thank you and have a wonderful day!
Tech Michael
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Customer: replied 3 years ago.

Cheers Michael.

I am a C&G qualified Radio TV & Electronics Engineer by trade.

At what connections can I test the heater/NTC can be ohms tested for continuity/resistance before I check current draw. If these are OC that narrows it down. Have you got resistance readings for these?

Is the control module in the door?

I have previously removed the the door panel and there are quite a few "Red" wires!


Hi Graham,
All you can do so disconnect the heater element.
And check it with your meter for pretty much any resistance. If you have some them the unit is likely good.
As for the control module, yes its the control board in the front door.
I will stick with you if you will rate my service thus far as ok or better, no additional costs apply to rate ;-)
Michael, Customer Service
Category: Appliance
Satisfied Customers: 9568
Experience: I have been an appliance repair tech for over 30 years and will help you solve your problems.
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Customer: replied 3 years ago.

Cheers Michael.

I want to rule the heater out a it would be beyond economical repair if it was OC. Which wires would it be?


As for testing the heater element, on that model, its best to pull the dishwasher out and lay it on its back to access the heater as its a little tough. you will then remove the two wires from the heater and check the element for any ohms, if you see ohms at all, the heater is likely fine;-)
Customer: replied 3 years ago.

My wife informs me that it doesn't do it all the time.

I've just run a 30min wash and after 10 mins opened the door to be greeted with hot water!

Rules out the heater.

Must be intermittent.


Hi Graham, if thats the case please check and lube all connectors to the control board and the heater. But this could also be now the relays in the control board failing and that would require the replacement of the control board;-(
Hello, my name is***** when you check the PCB, look for one leg of the heater relay being without soulder.
Hi Graham, yes that also a way to check to see if the main board is even supplying power to the heater.