Replaced broken spray arm water supply. Also replaced cover (AP7205064). Spray arm was not part if error code but I replaced it anyway. Here is a video I followed. https://www.youtube.com/watch?v=rLrd1RkmITQ
Here is video that diagnosed matched my problem. Check out this video, "error code e07 bosch dishwasher" https://share.google/G6hVMn8pyUQ6o4MWJ
Drying out interior is key. I used shop vac and a tube taped to end the fit down into hole.