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Home / DTC / B1B10 — transponder 8 key

B1B10 — transponder 8 key

Detailed page for trouble code B1B10.

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Code

B1B10

LAND ROVER B — Body

transponder 8 key

Brand: LAND ROVER
Type: B — Body
Views: UK: 15 EN: 24 RU: 18
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Damaged or unprogrammed transponder key (key transponder chip faulty or missing).
  • Weak or dead key battery (if key contains a battery-powered module).
  • Faulty or open/shorted immobiliser antenna/coils (key reader).
  • Intermittent or poor wiring/connectors between antenna and Body Control/immobiliser module.
  • Immobiliser/BCM module software fault or internal failure.
  • Corrosion or water ingress at antenna/module or poor earth/ground.

Symptoms

  • Engine cranks but does not start (or start inhibited).
  • Immobiliser warning lamp or key warning message on dash.
  • Key not detected message or intermittent recognition of that key.
  • Remote lock/unlock may work but engine will not start.
  • Multiple attempts or holding key near start button required to start.
  • No response when using that specific key while other programmed keys work normally.

What to check

  • Verify if other programmed keys start the vehicle (isolates key vs vehicle).
  • Check dashboard for immobiliser or key-related warning messages and stored DTCs.
  • Inspect key for visible damage and replace key battery if applicable.
  • Visual inspection of antenna/reader unit for damage, corrosion, or water ingress.
  • Scan vehicle and immobiliser/BCM for related codes and live data (key IDs, antenna status).
  • Measure antenna coil resistance and check power/ground at connector.

Signal parameters

  • Transponder carrier frequency typically around 125 kHz (RF field generated by antenna).
  • Antenna coil DC resistance — varies by design; typical ranges reported in manuals (measure and compare to spec).
  • Antenna supply voltage — typically vehicle battery/12V supply and local regulated power; expect presence of supply and ground at connector.
  • Transponder reply should be seen by immobiliser/BCM as a valid key ID within a few hundred milliseconds of field detection.
  • CAN/diagnostic messages: immobiliser/BCM should show key ID, key status and event timestamps when a key is presented.

Diagnostic algorithm

  1. Confirm symptoms and attempt to start with a known-good, programmed key. If known-good key works, suspect the key itself.
  2. Replace/verify key battery if key includes an active battery-powered component; retest key recognition.
  3. Use a diagnostic tool with manufacturer-level functions to read immobiliser key registers, attempt key read, and check for stored key entries and errors.
  4. Inspect the key physically (chip/case) and try reprogramming or cloning the key per manufacturer procedure if available.
  5. Visually inspect and test the antenna/reader: check connector pins, measure supply voltage and ground at the antenna, measure coil resistance and compare to spec.
  6. Wiggle-test wiring with ignition on while monitoring antenna/immobiliser data for intermittent changes; repair any broken wires or corroded connectors.
  7. If antenna checks good, scan immobiliser/BCM for internal faults. If module not seeing any antenna response but antenna is good, consider module fault.
  8. If reprogramming keys is required, follow Land Rover specific key learning procedure; ensure security access and correct diagnostic tool is used.
  9. After repairs or reprogramming, clear DTCs and perform full functional test: present each key, check immobiliser lamp, attempt start and confirm no recurrence of B1B10.
  10. If intermittent or unresolved, consider replacement of antenna/reader assembly or immobiliser/BCM per manufacturer guidance and retest.

Likely causes

  • Key not programmed or incorrectly programmed for that key slot.
  • Physical damage to the transponder chip or coil inside the key.
  • Antenna coil failure (open, short, or out-of-spec resistance).
  • Connector pin corrosion or broken wire on antenna/immobiliser harness.
  • Faulty immobiliser module (no reply to antenna even though antenna powered).
  • Low key battery preventing passive/active communication with reader.

Fault status

⚠️ Status
Transponder/key slot 8 not recognised or transponder reply out of expected parameters. Immobiliser may prevent engine start until valid transponder is presented or fault is cleared.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B1B11 B1B12 B1B13 B1B14 B1B15
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

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Code

B1B10

MITSUBISHI B — Body

DR.knee bolster squib low

Brand: MITSUBISHI
Type: B — Body
Views: UK: 20 EN: 27 RU: 20
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Damaged or unprogrammed transponder key (key transponder chip faulty or missing).
  • Weak or dead key battery (if key contains a battery-powered module).
  • Faulty or open/shorted immobiliser antenna/coils (key reader).
  • Intermittent or poor wiring/connectors between antenna and Body Control/immobiliser module.
  • Immobiliser/BCM module software fault or internal failure.
  • Corrosion or water ingress at antenna/module or poor earth/ground.

Symptoms

  • Engine cranks but does not start (or start inhibited).
  • Immobiliser warning lamp or key warning message on dash.
  • Key not detected message or intermittent recognition of that key.
  • Remote lock/unlock may work but engine will not start.
  • Multiple attempts or holding key near start button required to start.
  • No response when using that specific key while other programmed keys work normally.

What to check

  • Verify if other programmed keys start the vehicle (isolates key vs vehicle).
  • Check dashboard for immobiliser or key-related warning messages and stored DTCs.
  • Inspect key for visible damage and replace key battery if applicable.
  • Visual inspection of antenna/reader unit for damage, corrosion, or water ingress.
  • Scan vehicle and immobiliser/BCM for related codes and live data (key IDs, antenna status).
  • Measure antenna coil resistance and check power/ground at connector.

Signal parameters

  • Transponder carrier frequency typically around 125 kHz (RF field generated by antenna).
  • Antenna coil DC resistance — varies by design; typical ranges reported in manuals (measure and compare to spec).
  • Antenna supply voltage — typically vehicle battery/12V supply and local regulated power; expect presence of supply and ground at connector.
  • Transponder reply should be seen by immobiliser/BCM as a valid key ID within a few hundred milliseconds of field detection.
  • CAN/diagnostic messages: immobiliser/BCM should show key ID, key status and event timestamps when a key is presented.

Diagnostic algorithm

  1. Confirm symptoms and attempt to start with a known-good, programmed key. If known-good key works, suspect the key itself.
  2. Replace/verify key battery if key includes an active battery-powered component; retest key recognition.
  3. Use a diagnostic tool with manufacturer-level functions to read immobiliser key registers, attempt key read, and check for stored key entries and errors.
  4. Inspect the key physically (chip/case) and try reprogramming or cloning the key per manufacturer procedure if available.
  5. Visually inspect and test the antenna/reader: check connector pins, measure supply voltage and ground at the antenna, measure coil resistance and compare to spec.
  6. Wiggle-test wiring with ignition on while monitoring antenna/immobiliser data for intermittent changes; repair any broken wires or corroded connectors.
  7. If antenna checks good, scan immobiliser/BCM for internal faults. If module not seeing any antenna response but antenna is good, consider module fault.
  8. If reprogramming keys is required, follow Land Rover specific key learning procedure; ensure security access and correct diagnostic tool is used.
  9. After repairs or reprogramming, clear DTCs and perform full functional test: present each key, check immobiliser lamp, attempt start and confirm no recurrence of B1B10.
  10. If intermittent or unresolved, consider replacement of antenna/reader assembly or immobiliser/BCM per manufacturer guidance and retest.

Likely causes

  • Key not programmed or incorrectly programmed for that key slot.
  • Physical damage to the transponder chip or coil inside the key.
  • Antenna coil failure (open, short, or out-of-spec resistance).
  • Connector pin corrosion or broken wire on antenna/immobiliser harness.
  • Faulty immobiliser module (no reply to antenna even though antenna powered).
  • Low key battery preventing passive/active communication with reader.

Fault status

⚠️ Status
Transponder/key slot 8 not recognised or transponder reply out of expected parameters. Immobiliser may prevent engine start until valid transponder is presented or fault is cleared.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B1B11 B1B12 B1B13 B1B14 B1B15
406

Browse 406 MITSUBISHI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

MITSUBISHI

Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email

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