B1247

Code

LAND ROVER B — Body

Left rear turn signal indicator

Brand: LAND ROVER

Type: B — Body

Views: UK: 17 EN: 21 RU: 18

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Burnt-out or faulty turn signal bulb (left rear)
Corroded/damaged bulb socket or connector
Open or shorted wiring between lamp and control module
Poor or missing ground at the lamp circuit
Faulty Body Control Module (BCM) / SAM / lamp driver
Blown related fuse or poor fuse connection

Symptoms

Left rear turn signal does not illuminate
Turn signal indicator on dash may flash faster than normal (hyperflash) or warn
Interruptions or intermittent function for left rear signal
Possible warning lamp/message on instrument cluster
Other lighting circuits may operate normally

What to check

Scan vehicle with OEM-capable scan tool to read/confirm B1247 and view live lamp status
Visually inspect left rear bulb for blown filament and inspect socket for corrosion or damage
Check related fuses and fuse holder connections
Activate turn signal and verify ~12 V at lamp socket pin with a multimeter
Check continuity to ground at the lamp socket and measure resistance to chassis
Wiggle test wiring and connectors while monitoring lamp function for intermittent faults

Signal parameters

Supply voltage at lamp socket when active: ~11–14 V
Typical incandescent bulb current: ~0.5–2.0 A (depends on bulb wattage, e.g., 21 W ≈ 1.7 A at 12 V)
Lamp filament resistance (cold): tens of ohms (depends on bulb wattage), near infinite if open
Normal flash rate: ~60–120 flashes per minute (varies by vehicle); noticeably faster if a bulb is out
Continuity: near 0 Ω from socket ground to chassis ground

Diagnostic algorithm

Connect scan tool, read and record B1247 and any related codes; view live data for left rear lamp output.
Visually inspect bulb and socket. Replace bulb with known good unit or swap with right rear to confirm bulb condition.
Inspect connectors, pins and wiring for corrosion, bent pins, burns or water ingress. Repair as needed.
With turn signal commanded ON, measure voltage at the lamp socket positive terminal and measure continuity to ground. Note intermittent loss of voltage or unexpected short to ground/ignition.
If no supply voltage at socket but BCM indicates output active, backprobe harness and trace between module and lamp to find open circuit or high resistance.
Check associated fuses and wiring junctions (including trailer/tow connectors) for shorts or poor connections.
If wiring and lamp verify good but module output is abnormal, consult wiring diagrams and consider replacing or reprogramming BCM/SAM per manufacturer procedure.
Clear codes, re-test functionality and verify code does not return.

Likely causes

Burnt/failed left rear bulb
Corroded socket or loose connector
Open ground or broken filament wiring
Short to chassis or +12V in harness
Faulty lamp output in BCM (less common)

Fault status

⚠️ Status

Left rear turn signal circuit fault detected — bulb out/open/short/low or high resistance in left rear indicator circuit.

🟡 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