DTC U201F-31: External Receiver - No signal: Action

Refer to the appropriate system wiring diagrams and check the RF receiver power and ground circuits for open circuit, high resistance
Using JLR approved diagnostic equipment, clear the DTCs and retest. If the fault persists, install a new RF receiver
Using JLR approved diagnostic equipment, clear the DTCs and retest. Perform routine - On Demand Self Test (0x0202). If the fault persists, install a new remote function actuator