DTC P1889-19: Oil Pressure Pump Performance - Circuit current above threshold: Action

WARNING: This page is about a different car, the 2018 Jaguar XE and 2017 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.

Refer to the applicable SYSTEM WIRING DIAGRAM(S) and check the transfer case fluid pump circuit for short circuit to ground, short circuit to power. Repair the wiring harness or install a new transfer case fluid pump as necessary
Drain a sample of transfer case fluid and check for debris. If no debris is present, install a new transfer case fluid pump. Drain and refill the transfer case with the specified grade and volume of fluid
Drain a sample of transfer case fluid and check for debris. If debris is present, install a new transfer case
Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test. If the fault persists, install a new transfer case control module