DTC P0A1F-01: Battery Energy Control Module - General electrical failure: Action

NOTE: It is not permissible to disassemble the MHEV battery.

Refer to the electrical circuit diagrams and check the battery energy control module power and ground circuits for open circuit, high resistance. Repair the wiring harness as necessary.
Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest. If the fault persists, install a new MHEV battery