B1D50

Code

LAND ROVER B — Body

DVD Unit

Brand: LAND ROVER

Type: B — Body

Views: UK: 10 EN: 20 RU: 12

AI status

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Page language: EN

Causes

Loss of power or ground to the DVD unit
Corroded, damaged or disconnected connector/wiring
CAN/MOST/BUS communication fault between modules
Blown fuse or poor fuse connection
Internal failure of the DVD unit electronics or optical drive
Software or configuration mismatch/corruption

Symptoms

DVD will not load or play discs
No audio/video from DVD source
Error message or DVD warning displayed on infotainment screen
Intermittent loss of infotainment features or screen freeze
Related DTCs stored for COMM/BUS or other infotainment modules
Unable to access DVD menu or track information

What to check

Read all stored and pending codes from all modules; record freeze frame data
Check for other infotainment or communication DTCs that may be related
Visually inspect DVD unit connector, wiring harness and mounting for damage or corrosion
Verify fuses and relearn relays for infotainment and accessory circuits
Check battery voltage at ignition on and at the DVD unit connector
Verify good ground at the DVD unit housing/ground pin

Signal parameters

Battery supply voltage at DVD unit: ~11–14.5 V (ignition on)
Ground continuity/resistance:
CAN High/Low idle voltages: CANH ~2.5–3.5 V, CANL ~1–1.5 V (verify differential ~2.5 V)
Most/LIN/infotainment bus signals: present and toggling when active (vehicle-specific)
Audio output presence (analog/optical/LVDS) when DVD is commanded to play
Communication/heartbeat messages count and error frame rate via diagnostic tool

Diagnostic algorithm

Connect a capable scan tool and read all modules; note B1D50 plus any related DTCs and freeze frame data.
Attempt to reproduce the fault (insert known good DVD, operate menus) while watching live data and communication status.
Inspect fuses and wiring: check and replace any blown fuses for the infotainment/DVD circuit; wiggle test wiring and connectors for intermittent faults.
Verify power and ground at the DVD unit connector with ignition on; backprobe pins to confirm correct voltages and ground continuity.
Check vehicle network: verify CAN/MOST/LIN bus behaviour at the DVD unit connector using an oscilloscope or advanced scan tool; look for missing or noisy messages.
Inspect connectors for corrosion, bent pins, water ingress or poor mating; clean and reseat connectors as required.
If wiring and network are good, check for available software updates or module configuration resets (follow manufacturer service procedures).
If possible, swap with a known-good DVD/infotainment unit or substitute module to confirm unit fault (observe immobiliser/anti-theft and dealer pairing requirements).
If replacement is required, ensure correct programming/coding and perform post-repair relearn procedures; clear codes and road test to verify repair.
If intermittent or complex network faults persist, escalate to manufacturer technical support for wiring diagrams, module pinouts and service bulletins.

Likely causes

Open or intermittent power (fuse, ignition supply) to DVD unit
Open or high-resistance ground at DVD unit
Corroded/loose multi-pin connector at DVD unit
Faulty or missing CAN/infotainment bus communication
DVD unit hardware fault (laser/mechanical/electronics)
Failed module after recent water ingress or collision

Fault status

⚠️ Status

B1D50 - DVD Unit fault detected (power/communication/hardware issue)

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0 - 3.0 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

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