B1D84

Code

LAND ROVER B — Body

Headphone panel 1

Brand: LAND ROVER

Type: B — Body

Views: UK: 9 EN: 18 RU: 6

AI status

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Page language: EN

Causes

Loose or corroded connector at headphone panel
Damaged wiring (open, short to ground or short to battery) in the panel circuit
Faulty headphone panel module (internal electronics)
Blown fuse or poor fuse contact for the entertainment circuit
Water ingress or physical damage to the panel or connector
Loss of communications on the vehicle network (LIN/CAN) or a module addressing/configuration error

Symptoms

No audio or no headphone operation from Headphone Panel 1
Intermittent or complete loss of rear entertainment functions
Warning or message on infotainment screen about rear audio/device
Stored B1D84 fault present in module scan
Lights/IR on panel not functioning

What to check

Read and record all stored and pending codes with a diagnostic scan tool; note freeze frame or occurrence conditions
Visually inspect headphone panel, connector and wiring for corrosion, water ingress, bent pins or physical damage
Check related fuses and fuseholder contacts for continuity and good seating
With ignition on, verify supply voltage at the panel power pin(s) and confirm a good ground at the harness connector
Use a scan tool to check whether the entertainment/headphone module is present on the network and able to communicate
Wiggle test the harness while monitoring the code list and module communications for intermittent faults

Signal parameters

Switched supply voltage to headphone panel (approx. vehicle battery/ignition supply)
Ground continuity/resistance to chassis ground (low ohms expected)
Presence of module responses/messages on vehicle network (LIN/CAN) using a diagnostic tool
Connector pin continuity between panel connector and the corresponding module or junction (ohms)
Any error/communication counters reported by the body or entertainment modules

Diagnostic algorithm

Connect a capable scan tool and read all modules; record B1D84 and any related codes
Confirm module identity on the bus and check for communication faults or timeouts
Perform a visual inspection of the headphone panel, connector and harness for corrosion, bent pins, water damage or physical impact
Check fuses for the entertainment/headphone circuit and verify fuse voltage in place with ignition on
Measure battery/switched voltage at the panel connector power pin and verify ground continuity to chassis
If vehicle uses LIN/CAN to the panel, monitor the bus with a scan tool or scope to confirm network activity and frame contents for that module
Perform a wiggle test on the harness while observing live data/communications to reproduce the fault if intermittent
If wiring and power/ground are good but communication is absent or erratic, swap in a known-good headphone panel (or substitute known-good module if available) to confirm module fault
If replacement required, follow manufacturer procedure for module replacement and programming; clear codes and perform functional test
After repair, clear codes and verify the repair by cycling ignition and driving until the system would normally generate the fault conditions

Likely causes

Loose/corroded connector or poor ground at headphone panel
Water ingress / physical damage to panel or connector
Open/short in the harness to the panel
Faulty headphone panel module

Fault status

⚠️ Status

Stored — Fault detected on Headphone Panel 1 circuit (power/ground/wiring/communications).

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours

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LAND ROVER

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