Thanks for your reply. It is indeed the heat relay on the control board (although I was hoping to get the diagnostic codes to check overall health of the washer to help determine whether it makes sense to repair or replace--it's just about 5 years old).
The connection was burnt badly through. To repair, I guess I need to replace either the heat relay or the entire control board. I had seen your post elsewhere and just tried to re-solder the burnt connection, but it may be too far gone (the metal leg doesn't come through the circuit board anymore so not sure there will be a connection--plus, I'm a newbie at soldering). Which way do you think I should go? Also, if anyone has the diagnostic codes for this model (SHE42L), please post. Thanks again.

Thanks. Do you sell just the heat relay? Wouldn't mind trying to replace just that first (since it's only a few bucks), before dropping $175 into a 5 year old machine.

No worries, thanks again. BTW, apparently the solder worked. The sanitizer light is back on. Do you think I still need to replace the control assembly or is it okay to keep using the old relay?

I'll keep an eye on it and if it seems to be otherwise in good shape, I'll probably replace the control panel. In the meantime, I tracked down the diagnosis codes so wanted to post in case others could use (see attached). It was located on the bottom left hand corner of the dishwasher (behind the kick plate). Thanks for all your help!