Last update. Fixed the problem with codes 52 and 53. I look at the wires near the speed sensors and near the logic. I assumed it was a wiring problem because the chances of both sensors going bad at the same time are pretty slim. No damage to the sensors or wires near the connectors. Hmmm. Wait, let's check continuity. I know wires don't usually break in the middle of a run, but let's check. No continuity. Tugged on one end of the harness and it came out in my hand. Turns out the driver installed the battery and smashed the harness. Remove battery, fix wires, back in service! Thanks for the help, guys.
Mike