As a follow up to 100/80's post above, spend $45 and get a new Crank Sensor - but don't buy one at Autozone - get the original BOSCH part:

https://www.germanautosupply.com/sto...sensor-82.html

I can't re-read all of your posts, but will ask - how old is the battery? Bad batteries cause all sorts of nonsense in these (and other) cars.

The air pump code can be ignored for now, it won't stop the car from running. Also, you really want to go over ALL connections/lands/joints on the RCM. I'd reheat and reflow every one of them. Taking a look at the relay contacts is a good idea, too. I know most of us don't have a relay burnishing tool to clean them up, but if any look REALLY pitted/burned/bad, a new relay is indicated. I think 180 has a source for them.