There are two designs for the fuel pressure regulator, not interchangeable as far as I know. So you need the correct one.
P0190 FUEL PRESS SENSOR CIRCUIT MALF SIGNAL VOLTAGE TOO HIGH
P0190 FUEL PRESS SENSOR CIRCUIT MALF SIGNAL VOLTAGE TOO LOW
P0190 FUEL PRESS SENSOR CIRCUIT MALF SIGNAL VOLTAGE TOO HIGH OR LOW
You can find the factory service manual here:
https://www.colorado4wheel.com/manuals/Jeep/WJ/
In the manual you can find the diagnostics procedure for each error code, what to measure, where etc etc. That's your best option for diagnosing this.
Out of curiosity, you can start the logging in WJDiagPro and log the fuel pressure values. It sounds like the sensor has high readings and forces the fuel pressure regulator to open and keep the real pressure low.
This might be a wiring issue, not a sensor issue.
If there would be problems with the fuel pressure regulator, I assume you would get P1130 because the actual fuel pressure would deviate from the requested fuel pressure.