DTC B1B57-15: Front Sensors Power Circuit - Circuit short to battery or open: Action

Check front bumper harness for signs of damage and security of connections
Refer to the electrical circuit diagrams and check the front park assist/parking aid sensors power circuit for short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary
Using the Jaguar Land Rover approved diagnostic equipment, clear the DTC and run the on demand self test. If the problem persists, suspect the control module
Cycle the ignition off, then on, to power up parking aid system and check corrective action