DTC P0978-19: Shift Solenoid "C" Control Circuit Range/Performance - Circuit current above threshold: Action

NOTE: After installing a new transmission control module, perform routines - Configure New Module (Without Transmission Replacement), Transmission Control Module Adaption.

Refer to the electrical circuit diagrams and check the multiplate clutch 'C' pressure control valve solenoid circuit for short circuit to power. Repair the wiring harness or install a new solenoid as necessary
Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest. If the fault persists, install a new transmission control module