I replaced the broken sensor and all is well at the moment. I while waited for the part, I read where I could disconnect the sensor and the AHC would level out and go to "off". Sure enough that got me back in business until I replaced the sensor. Next step is to bleed the system.
Thank goodness I found this thread. My vehicle did the same thing after I hit a large pothole.
I floundered around for a while troubleshooting and testing the pump and relay with everything working. Decided to change the front globes after I found no fluid when I bled the front LH globe and...