Diagnostic Reference

RFA DTC Codes

Complete diagnostic reference for Remote Function Actuator module in Jaguar & Land Rover vehicles

JLR RFA Diagnostics
Visual Reference

What Do These Modules Look Like?

Visual identification guide for RFA, BCM, and TCU modules found in Jaguar Land Rover vehicles

RFA Module

Remote Function Actuator

RFA JLR Remote Function Actuator Module

Controls keyless entry and remote key functions

Usually located behind dashboard or in trunk area

Handles 315/433 MHz RF and UWB communication

BCM Module

Body Control Module

BCM Body Control Module JLR

Manages central locking, lights, and body electronics

Communicates with RFA for key authentication

Located under dashboard or in engine bay

TCU Module

Telematics Control Unit

TCU Telematics Control Unit Module JLR

Provides cellular, GPS, and WiFi connectivity

Enables InControl services and emergency SOS calls

Usually found behind dashboard or roof console

Pro Tip: Module Identification

Always verify the module part number before ordering replacements. Use diagnostic tools to read module information via OBD-II port. Each module has a unique part number printed on its label that corresponds to specific vehicle models and production years.

Remote Function Actuator Module

RFA DTC Database

Select a category below to view diagnostic codes

Priority Matrix

CRITICAL B10C9-12, B10CA-12, B10CB-12 - Fix short-to-power FIRST
HIGH B1DDB-55, B1DE4-55 - Resolve during PDI
MEDIUM B1009-51, B10A9-00 - Program keys/Security ID
STANDARD Door handles, antenna shorts, touch sensors

Reference Values

12-14V

Battery Voltage

<5Ω

Circuit Resistance

8-15Ω

Antenna Coil

>100kΩ

Touch Sensor

Quick Tips & Abbreviations

Use SDD/Pathfinder

Battery Support Required

Check Water Damage

Wiring First

NO Diagnosis by Substitution - Always follow proper diagnostic procedures before replacing parts

RFA Remote Function Actuator LF 125 kHz UWB Ultra-Wideband SDD Symptom Driven Diagnostics BCM Body Control Fuse 17 BCM Fuse 20 RFA 5A

RFA Programming & Recovery

Hardware Recovery

1.Locate Fuse 20 (5A) and BCM Fuse 17 via TOPIx
2.Remove/refit BCM Fuse 17 at START of download
3.Follow exact timing from service procedure

After Replacement

1.Write VIN → Security ID (0x7006)
2.Program all smart keys (min 2 required)
3.Verify antennas (0x8006) → Update software
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

Need Help with RFA Issues?

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Products Contact

Related Resources

TCU DTC Database FAQ Locked RFA EVA2 Unlock New RFA + BCM CCF Editing