I had two codes:
P0430 which I have had off and on and I am not worried about.
P0522: Engine Oil Pressure Sensor/Switch Low Voltage (If Mercedes/Chrysler, could be P2006 Intake manifold tumble flap sensor/connection)
I swapped the sensor and there was no change. Both the new and old sensors give me the exact same Ohm readings between all the terminals when removed from the vehicle.

So, I looked up a video on how to test the wiring between the PCM and the sensor connector. All continuity readings were good, but on one test I seemed to be getting voltage where I shouldn't have. Honestly I'm not an expert so I can't say I understand it all.

I put everything back together and now, I've got a TON of codes. The car runs fine, though. I know for SURE that the oil pressure is actually fine, for example.

All these sudden low/high voltage codes would indicate either a short or a bad PCM, right? I really don't think I created a short because I didn't move the harness much at all. Any thoughts? I'm thinking of just ordering a rebuilt PCM and trying it - only $300.

My most recent codes:

Vehicle VIN: 3C4PDCBG4CT391353
Vehicle Manufacturer: Chrysler
Vehicle Calibration ID: 68092683AH
H

Current Fault Log
------------------
P0010: "A" Camshaft Position Actuator Circuit (Bank 1)
P0020: "A" Camshaft Position Actuator Circuit (Bank 2)
P0118: Engine Coolant Temperature Circuit High Input
P0123: Throttle/Pedal Position Sensor/Switch A Circuit High Input
P0430: Catalyst System Efficiency Below Threshold (Bank 2)
P0520: Engine Oil Pressure Sensor/Switch Circuit
P06DA: null
P1801: Performance Selector Switch Failure
P1801: Performance Selector Switch Failure

Pending Fault Log
------------------
ECU reports no pending faults

Historic Fault Log
------------------
ECU reports no historic faults
Other discovered fault codes
(possibly pending, current or manufacturer specific)
----------------------------------------------------
P0013: "B" Camshaft Position - Actuator Circuit (Bank 1)
P0023: "B" Camshaft Position - Actuator Circuit (Bank 2)
P0108: Manifold Absolute Pressure/Barometric Pressure Circuit High Input
P0113: Intake Air Temperature Circuit High Input
P0198: Engine Oil Temperature Sensor High
P0222: Throttle/Pedal Position Sensor/Switch "B" Circuit Low Input
P0522: Engine Oil Pressure Sensor/Switch Low Voltage (If Mercedes/Chrysler, could be P2006 Intake manifold tumble flap sensor/connection)
P0523: Engine Oil Pressure Sensor/Switch High Voltage
P0533: A/C Refrigerant Pressure Sensor Circuit High Input
P0622: Generator Field "F" Terminal Control Circuit
P2111: Throttle Actuator Control System - Stuck Open
P3002: null
P3021: null