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DTC Codes
Complete diagnostic reference for Remote Function Actuator module in Jaguar & Land Rover vehicles
Visual identification guide for RFA, BCM, and TCU modules found in Jaguar Land Rover vehicles
Remote Function Actuator
Controls keyless entry and remote key functions
Usually located behind dashboard or in trunk area
Handles 315/433 MHz RF and UWB communication
Body Control Module
Manages central locking, lights, and body electronics
Communicates with RFA for key authentication
Located under dashboard or in engine bay
Telematics Control Unit
Provides cellular, GPS, and WiFi connectivity
Enables InControl services and emergency SOS calls
Usually found behind dashboard or roof console
Select a category below to view diagnostic codes
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Tools: SDD/Pathfinder with VIN authorization required
Specs: Security ID must match vehicle VIN
NOTE: System requires minimum 2 keys for full functionality
Tools: SDD/Pathfinder
Specs: Minimum 2 keys required for system operation
Specs: Typical resistance: < 5 ohms for good circuits
Specs: Voltage expected: 0V (pulled) to 5V (released) | Resistance to ground: > 10k ohms
IMPORTANT: Check for short-to-power DTCs (B10C9-12, etc.) on OTHER antennas FIRST - resolve those before this fault
Specs: Frequency: 125 kHz | Coil resistance: 8-15 ohms | Location: Center console/dashboard area
CRITICAL: This fault can cause OTHER antenna DTCs to log - Resolve this DTC FIRST before diagnosing other antenna faults
Specs: Antenna wires should read 0V when disconnected
NOTE: Check for short-to-power DTCs on other antennas first
IMPORTANT: Check for short-to-power DTCs on other antennas FIRST
Specs: Frequency: 125 kHz | Coil resistance: 8-15 ohms | Location: Center console or between front seats
CRITICAL: Fix this before diagnosing other antenna faults
Specs: Location: Center console or between front seats
IMPORTANT: Check for short-to-power DTCs on other antennas FIRST
Specs: Frequency: 125 kHz | Location: Rear cargo area or rear seat area
CRITICAL: Fix this before other antenna faults
Specs: Location: Rear cargo area or rear seat area
IMPORTANT: Check for short-to-power DTCs on other antennas FIRST
Specs: Frequency: 125 kHz | Coil resistance: 8-15 ohms | Location: Integrated into front door handle(s)
CRITICAL: Fix this FIRST before other antenna diagnostics
Specs: Location: Integrated into front door handle(s)
IMPORTANT: Check short-to-power DTCs first
Specs: Frequency: 125 kHz | Location: Rear door handle or cargo area
CRITICAL: Fix this FIRST
Specs: Location: Rear door handle or cargo area
Specs: Sensor type: Capacitive touch | Resistance to ground: > 100k ohms
Specs: Signal voltage: 0-5V range
NOTE: This circuit/switch is available as an option
NOTE: This circuit/switch is available as an option
NOTE: If this DTC is set, the remote function module needs to be replaced to restore functionality. Before the module is replaced all related faults must be corrected
NOTE: If this DTC is set, the output is disabled until reset by the Lock50 HW04 Tool
NOTE: If any other Low Frequency (LF) antenna short circuit to power DTC is also set, perform the relevant corrective action(s) first
NOTE: If any other Low Frequency (LF) antenna short circuit to power DTC is also set, perform the relevant corrective action(s) first
NOTE: If this DTC is set, the remote function module needs to be replaced to restore functionality. Before the module is replaced all related faults must be corrected
NOTE: If this DTC is set, the output is disabled until reset by the Lock50 HW04 Tool
NOTE: If this DTC is set, the remote function module needs to be replaced to restore functionality. Before the module is replaced all related faults must be corrected
NOTE: If this DTC is set, the output is disabled until reset by the Lock50 HW04 Tool
NOTE: If this DTC is set, the remote function module needs to be replaced to restore functionality. Before the module is replaced all related faults must be corrected
NOTE: If this DTC is set, the output is disabled until reset by the Lock50 HW04 Tool
Tools: SDD/Pathfinder with battery support unit
Specs: Battery voltage: 12-14V | Fuse 17 (BCM) | Fuse 20 (RFA 5A)
INITIAL CHECK: Press lock/unlock button on remote 10 times consecutively
Tools: Pathfinder P205 or later with battery support unit
Symptoms: Smart key not found message on instrument cluster | Passive start not working | Remote lock/unlock not functioning
Specs: Common on 18MY vehicles during PDI | Affected: E-PACE (X540), I-PACE (X590), Discovery (L462), Range Rover models
NOTE: After updating the car configuration file, set the ignition to on and wait 30 seconds before clearing the DTCs
NOTE: If any other Low Frequency (LF) antenna short circuit to power DTC is also set, perform the relevant corrective action(s) first
NOTE: If any other Low Frequency (LF) antenna short circuit to power DTC is also set, perform the relevant corrective action(s) first
NOTE: If any other Low Frequency (LF) antenna short circuit to power DTC is also set, perform the relevant corrective action(s) first
NOTE: If any other Low Frequency (LF) antenna short circuit to power DTC is also set, perform the relevant corrective action(s) first
NOTE: If any other Low Frequency (LF) antenna short circuit to power DTC is also set, perform the relevant corrective action(s) first
NOTE: If any other Low Frequency (LF) antenna short circuit to power DTC is also set, perform the relevant corrective action(s) first
INITIAL CHECK: Press lock/unlock button on remote 10 times consecutively
NOTE: Often appears together with B1DDB-55
Tools: Pathfinder P205 or later with battery support unit
Symptoms: Smart key not found message | Passive start not working | Remote lock/unlock not functioning
Specs: Common on 18MY vehicles during PDI | Affected: E-PACE (X540), I-PACE (X590), Discovery (L462), Range Rover models
NOTE: After updating the car configuration file, set the ignition to on and wait 30 seconds before clearing the DTCs
NOTE: This DTC is only reported via the On Demand Self Test (0x0202)
NOTE: This DTC is only reported via the On Demand Self Test (0x0202)
NOTE: After updating the car configuration file, set the ignition to on and wait 30 seconds before clearing the DTCs
NOTE: After updating the car configuration file, set the ignition to on and wait 30 seconds before clearing the DTCs
NOTE: After updating the car configuration file, set the ignition to on and wait 30 seconds before clearing the DTCs
NOTE: After updating the car configuration file, set the ignition to on and wait 30 seconds before clearing the DTCs
Try adjusting your search terms
12-14V
Battery Voltage
<5Ω
Circuit Resistance
8-15Ω
Antenna Coil
>100kΩ
Touch Sensor
Use SDD/Pathfinder
Battery Support Required
Check Water Damage
Wiring First
NO Diagnosis by Substitution - Always follow proper diagnostic procedures before replacing parts
0x0202
Self Test
0x7006
Security ID
0x8006
All Antennas
0x8003
E-Latch Test
UWB Quick Fix: For B1DDB-55, B1DE4-55 - Press Lock/Unlock 10x on remote before software updates
Common on E-PACE, I-PACE, Discovery, Range Rover during PDI
Lock50 HW04 provides solutions for key programming, module unlocking, and advanced diagnostics.