Theory Of Operation
WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
The Gear Shift Module (GSM) / Electronic Shift Module (ESM) performs various internal tests to verify proper controller operation. This DTC indicates that there is a fault with the Shifter Bezel wiring harness or the PRNDM circuitry in the Shifter Bezel.