B11AE

Code

LAND ROVER B — Body

Menu Menu

Brand: LAND ROVER

Type: B — Body

Views: UK: 10 EN: 27 RU: 13

AI status

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Page language: EN

Causes

Temporary software or firmware glitch in the infotainment / control module
Faulty module (infotainment, body control, HVAC or related ECU)
Loss of CAN / LIN communication between modules
Damaged or corroded wiring or connectors
Low or unstable battery/vehicle supply voltage
Blown fuse or poor ground

Symptoms

Menu or system menus fail to display properly or are unresponsive
Intermittent disappearance of menu items or frozen menu screens
Associated warnings or messages on the instrument cluster
Multiple related communication or module codes stored
Features controlled through the menu do not operate

What to check

Read the full DTC list and freeze frame data with a factory-capable scan tool
Look for related communication codes (CAN/LIN) and other B-codes
Verify battery voltage and charging system health (stable 12V+ with engine off/on)
Inspect fuses and relays for infotainment and body modules
Visually inspect connectors and wiring at the affected module(s) for corrosion, damage or loose terminals
Check grounds for tightness and continuity to chassis

Signal parameters

Vehicle battery supply: ~12–14.5 V (stable under load and key cycles)
CAN bus idle differential voltages: CAN_H and CAN_L around expected idle (factory spec, typically centered around common-mode voltage) — check with scan tool or oscilloscope
LIN bus: expected idle and activity levels per service manual
Ground resistance: low continuity to chassis (
Module supply pin voltages and wake/sleep signals per wiring diagram

Diagnostic algorithm

Connect a factory-level diagnostic tool. Record B11AE plus any related codes and freeze frame data.
Attempt to reproduce symptom while monitoring live data and module communication status.
Check battery voltage and main power supply to the affected module. Charge or replace battery if voltage is low.
Inspect relevant fuses, relays and module connectors for damage, corrosion or water ingress. Repair as required.
Check CAN/LIN network: verify messages present/absent, measure bus voltages and waveform integrity with an oscilloscope if available.
If wiring and supply are confirmed good, verify module software level and compare to latest service information. Reflash or update software per manufacturer procedure if recommended.
If software update does not clear the fault and communication/power are correct, consider module replacement following diagnostic substitution procedures.
After any repair, clear codes and confirm fault does not return through normal vehicle operation and test drive.
If intermittent, monitor vehicle with data logger or perform stress tests (key cycles, temperature change, vibration) to try to reproduce.

Likely causes

Corrupted menu configuration or software error in the module
Intermittent CAN bus wiring fault or connector corrosion
Module failing under load or after a software update
Power supply/ground issue causing module reset or loss of functionality

Fault status

⚠️ Status

Menu system fault — module communication or software error detected. Inspect module power, communications and software.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-2.5 hours

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Repair manuals

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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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