Super heavy rain tonight caused limp mode for me. I was close to home so made it back safely. I'll take a look this weekend but did have a code for TPS. And discovered that the glass shop did not install all of the screws holding the cowl seal against the windscreen after last month's replacement. I'll be looking at securing the seal, waterproofing the connector, and maybe fabricating some type of shield. Hopefully drying out the parts will suffice rather than replacement.

 

You sound to be thinking on all the right lines so good luck!