I'll buy into that!
REG, ABS/TCS errors, I replaced all 4 of the wheel speed sensors on my '93 9000 CSE and all of the codes and occasional LimpHome mode disappeared. Check Rock auto for the speed sensors & decent pricing.There is a surprising amount of damage to the wire harness on this car. I used to see this sort of damage a lot and always theorized that random mechanics struggled with the "weird European connectors" in the '80s, but I usually don't see random failures on '90s+ cars. Nonetheless....
The ECT sensor connector was in similar condition... both are being replaced. I also found this at the ABS unit:
I don't know what this wire is for, but my fingers are crossed it's the cause of the ABS/TCS codes. It would be nice if it were that easy!