B1B32

Code

LAND ROVER B — Body

Key of identifier 30

Brand: LAND ROVER

Type: B — Body

Views: UK: 16 EN: 22 RU: 17

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Key transponder (chip) not recognized or damaged
Key battery weak or dead (affecting remote functions and some transponder systems)
Antenna ring / transponder reader fault or wiring/connectors damaged
Immobiliser / body control module software or configuration error
Key not programmed or lost from vehicle’s authorized key list
CAN/LIN communication fault between immobiliser and gateway/modules

Symptoms

Vehicle may refuse to start or crank allowed but engine immediately cuts out
Immobiliser or security warning lamp or message displayed
‘Key not recognised’ or similar message in instrument cluster/infotainment
Remote locking/unlocking or keyless entry/start intermittent or non-functional
Only some keys start the vehicle (spare/key variation)

What to check

Confirm which key(s) reproduce the fault; test with known good/spare key
Check key battery voltage and replace if low
Scan all modules with manufacturer diagnostic tool (IDS/SDD/JLR Pathfinder or equivalent) and read stored security/immobiliser data
Inspect antenna ring/coils, wiring harnesses and connectors at ignition/reader and immobiliser module
Check for related CAN/LIN communication DTCs and module power/ground
Verify key ID list stored in immobiliser/BCM and check for recent module replacements or reprogramming events

Signal parameters

Transponder UID/Key ID value reported by immobiliser (numeric identifier)
Antenna coil signal amplitude / presence when key presented (diagnostic live data)
Key battery voltage (V)
Immobiliser status flags (locked/unlocked/learn mode)
CAN/LIN messages between immobiliser/BCM and engine ECU (message presence/ID)
DTC status (stored/active/count) and freeze frame data

Diagnostic algorithm

Read all related DTCs with OEM diagnostic tool; note timestamps and freeze frame.
Confirm behaviour with each vehicle key. If a spare key works, suspect the failing key transponder.
Check/replace key battery if low and re-test.
Use dealer-level tool to read key ID list in the immobiliser and confirm whether identifier 30 is present or flagged.
Inspect antenna ring and wiring at the ignition or key reader for damage, corrosion, or poor connectors; repair as required.
Using diagnostic tool, monitor transponder/antenna live data while presenting the key; verify UID read and signal amplitude.
Check module power, ground and CAN/LIN communications; resolve any communication faults or voltage issues.
If key ID missing or corrupted, follow OEM procedure to re-learn or reprogramme the key(s) into the vehicle.
If immobiliser/BCM software or module has been replaced or corrupted, re-flash/update per manufacturer instructions and re-program keys.
After repair or reprogramming, clear DTCs and perform verified test drives and re-check for reappearance.

Likely causes

Damaged or unprogrammed key transponder
Faulty antenna ring (coil) around ignition/fob reader or poor connector
Key removed from key memory after module replacement or battery disconnect
Intermittent communications or module failure in immobiliser or BCM

Fault status

⚠️ Status

Key identifier 30 not recognised by the immobiliser/key reader. Possible missing/failed key transponder, antenna/reader fault, or immobiliser/module communication/configuration issue.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

Repair manuals

Manual library for LAND ROVER

320

Browse 320 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

LAND ROVER

Your experience will help others

+100 karma for a short comment :)

Was this AI description helpful?

Your feedback helps improve AI descriptions.

👍 Like 0 👎 Dislike 0

Send to email